Leland+ Content Library

Failure Math: A Software Reliability Cheat Sheet

A useful guide to how often hardware, clouds, and deploys actually fail, with real fleet data. Annual failure rates, GPU failure math from the Llama 3 training run, availability tables, and the composition rules that set your uptime ceiling. For system design interviews and for on-call reality.

Big-O Complexity: A Coding Interview Cheat Sheet

All the major Big-O complexity prep you need for a coding interview, on two pages. The growth ladder, what n fits in one second, data structures and sorting costs, graph algorithms, and a chart showing how the curves diverge. It ends with a five-step method for analyzing your solution out loud, with worked examples.

Back-of-the-Envelope Math: A System Design Cheat Sheet

The System Design estimation numbers that are worth memorizing. Current latency numbers, cloud costs, LLM inference speeds, QPS and storage shortcuts, and availability math, plus a five-step method and worked examples. Built for system design interviews and useful long after them.

The Path to Your First Booking

New to Leland and wanting to level up? Learn 5 strategies to build your business on the platform and walk away with a 30 day calendar to get you going.

Build a Personal AI That Schedules Your Life

SESSION GUIDE: https://www.lelandcourses.com/ai-builder/personal-ai-scheduler/ You text "dentist tomorrow 3 to 4pm, bring x-rays" and it's on your calendar before you put your phone down. ​Join Luca Tomasino, AI Automation Expert and n8n specialist who has coached over 100 professionals on building real AI workflows, for an exclusive AI Builder session where you'll create a Telegram bot that reads your messages, checks your Google Calendar for conflicts, and books your events automatically over text. ​You'll build the entire thing inside n8n from scratch, live, in under an hour. By the end of the session, you'll text your own bot and watch the event land on your calendar in real time, not in a demo, on your actual phone. ​This isn't a tutorial you'll finish later. Luca will walk you through every node, every connection, and every decision as you build, teaching you the core n8n concepts that unlock every other automation you'll ever want to build: triggers, AI agents with structured output, conditional logic, and multiple API integrations, all in one flow.

Real MBB Case Series: Live BCG Case Walkthrough

Are you gearing up for a management consulting interview and want to ace the case interview? Join me, Thabang, for a live BCG case walkthrough as part of our Real MBB Case Series. This session is designed to enhance your skills in case math, exhibit interpretation, frameworks, and overall case interview prep based off a Real BCG Case! With my background as an ex-MBB Consultant and having conducted over 1,000 coaching sessions, I have a proven track record of helping candidates secure their dream consulting roles. I was recognized as the Top Coach across Europe, Middle East & Africa in 2023 by an MBB, so I know exactly what it takes to succeed in MBB interviews.

Real MBB Case Series: Live McKinsey Case Walkthrough

Are you gearing up for a management consulting interview and want to ace the case interview? Join me, Thabang, for a live McKinsey case walkthrough as part of our Real MBB Case Series. This session is designed to enhance your skills in case math, exhibit interpretation, frameworks, and overall case interview prep based off a Real McKinsey Case! With my background as an ex-McKinsey Consultant and having conducted over 1,000 coaching sessions, I have a proven track record of helping candidates secure their dream consulting roles. I was recognized as the Top Coach across Europe, Middle East & Africa in 2023 by McKinsey, so I know exactly what it takes to succeed in MBB interviews.

Real MBB Case Series: Live Bain Case Walkthrough

Are you gearing up for a management consulting interview and want to ace the case interview? Join me, Thabang, for a live Bain case walkthrough as part of our Real MBB Case Series. This session is designed to enhance your skills in case math, exhibit interpretation, frameworks, and overall case interview prep based off a Real Bain Case! With my background as an ex-MBB Consultant and having conducted over 1,000 coaching sessions, I have a proven track record of helping candidates secure their dream consulting roles. I was recognized as the Top Coach across Europe, Middle East & Africa in 2023 by an MBB, so I know exactly what it takes to succeed in MBB interviews.

Cracking College Admission Week: Kickoff

The students who stand out in college admissions usually aren’t the ones doing everything, they’re the ones who know how to tell the right story. This kickoff session is designed to help you approach the application process with more clarity, strategy, and confidence from the very beginning. You’ll learn how to think about essays, extracurriculars, and overall positioning, along with the common patterns admissions professionals see across successful applicants.

Nailing the Activities Section of Your College App

The activities section is one of the most overlooked parts of the college application, yet it can strongly influence how admissions readers understand your impact and priorities. This session is for students who want to present their extracurricular experiences in a more strategic and compelling way. You’ll learn how to describe your involvement with clarity, prioritize activities effectively, and highlight leadership and initiative without sounding generic.

Co-Thinking with AI: Prompts Companion Guide

This companion guide contains the five co-thinking prompts from the Co-Thinking with AI: Beyond the Hype, Into Your Edge session, each one built around a situation you are probably already in. These are not generic prompts pulled from a list. Each one is engineered to force a diagnostic conversation before AI produces any recommendation, which means what you get back reflects your specific situation, your actual experience, and your real context. The five prompts cover: navigating a career crossroads with competing professional identities, responding to job application questions in a way that is authentically yours, running a structured root cause analysis on a recurring business problem, analyzing your own presentation or meeting performance using a transcript, and building a brand voice document that makes everything you create with AI sound like you wrote it. Use one at a time. Give each prompt the context it asks for. Push back on the outputs. That is where the value lives, not in the prompt itself, but in the conversation it opens.

Vibe Coding 101: Build a Real Product with Just an Idea and AI

Have an idea for a product but no clear roadmap for turning it into something real? This session is designed for founders, builders, and curious creators who want to understand how AI can help take a concept from rough idea to working product faster than traditional workflows allow. You’ll learn how to turn ideas into actionable prompts, structure an AI-assisted building process, and avoid common mistakes that slow projects down or create messy outputs.

Acing the PM Interview: Every Interview Type and How to Prepare for Them [5/29/2026] (Recording)

PM interviews test a wide range of skills, and many candidates struggle to know how to prepare across different formats. This session is for aspiring product managers who want a clear, structured approach to every major interview type. You’ll learn how to tackle product sense, execution, and behavioral questions, how to adapt your approach for each format, and what strong answers consistently demonstrate to interviewers. Join live to ask questions about your own preparation and get guidance on where to focus your effort. The speaker is a senior product manager who regularly coaches candidates through PM interviews. They’ll share the patterns they see across successful applicants and the kinds of feedback typically given in 1:1 interview prep sessions.

Build an Investor-Level Pitch Deck with Claude, Excel & PowerPoint [5/29/2026] (Recording)

Build Anything Series · Event 03 · Free · Live Investor decks are a specific genre. They aren't "presentations." They're a tight argument backed by a defensible model, told in 12 slides. This event walks through how to build one with Claude, Excel, and PowerPoint working together — the way real founders actually do it now. What we'll build live: - The financial model — TAM/SAM/SOM, unit economics, P&L forecast, sensitivities, all in Excel/Sheets with Claude generating and reviewing the formulas - The story — problem, market, solution, traction, team, ask. Each slide does one job. We'll write them tight. - The slides — clean figures, charts that read in 3 seconds, narrative continuity. Polished and ready to send. Who it's for: - Founders fundraising (or about to) - Operators building internal pitches for new initiatives - Anyone who's stared at a blank deck for two weeks waiting for inspiration Not a fit if: - You don't have a real business or initiative to pitch - You want me to make a deck for you — this is a workshop, you build alongside We'll be honest about what investors actually look at (versus what advisors say they look at), and where AI helps versus where it gets in the way. Bring your data — even rough — and we'll build live.

How to Succeed as a Joint MBA-MPP Applicant

Are you considering applying for a joint MBA-MPP program and wondering how to stand out in the competitive admissions process? Join me for an insightful session on how to succeed as a joint MBA-MPP applicant. With firsthand experience as an admit to both Harvard Kennedy School and MIT Sloan, I understand the unique challenges and opportunities of these programs. Throughout my career, I've helped applicants craft compelling narratives that connect their experiences to a clear direction, focusing on school and networking strategy, essays, resumes, and interviews. In this session, we'll cover the common storytelling mishaps of joint degree candidates, and exactly what admissions committees are looking for. We'll also do a live exercise so you can walk away with a better sense of your own application story.

Your Senior Summer Blueprint: What Top College Admits Do Differently

Are you ready to make the most of your senior summer and set yourself apart in the college admissions process? Join me for a practical session on crafting your Senior Summer Blueprint. As someone who has guided students to some of the most prestigious institutions in the country, including all eight Ivy League schools and Stanford, I know what it takes to stand out. And I know that the summer months before senior year can make all the difference. In this session, I'll share my recommendations for how to structure your summer—what to do and when—so you can head into fall feeling organized, confident, and ahead of the curve. In other words: less overwhelm, stronger applications.

Law School Week Kickoff [5/26/2026] (Recording)

Kick off your law school journey the right way: join us for an exclusive panel of law admissions experts who have been on both sides of the application process and know exactly what it takes to stand out. From crafting a compelling personal statement to navigating the LSAT and building your school list, they'll walk you through every stage with real, actionable advice you won't find anywhere else. This is the event that sets the tone for your entire application cycle, and you don't want to miss it.

The Framework for Solving LSAT Flaw Questions [5/21/2026] (Recording)

After this session, you will understand a clear framework for solving LSAT flaw questions with more consistency and confidence under time pressure. This session is designed for students who want to move beyond guessing and learn how to systematically identify flawed reasoning patterns, break down argument structure, and eliminate answer choices more efficiently. These are the patterns that often separate consistent scorers from those who plateau on logical reasoning. Attending live means you can ask about your specific score range, your toughest flaw question types, or the timing issues you keep running into, and hear how an experienced LSAT coach thinks through those situations in real time. The coach works with LSAT students regularly and will be sharing the diagnostic instincts and structural thinking that inform that work every day. If you want a more repeatable approach to LSAT flaw questions, it’s worth joining live.

What PE Firms Actually Look For in Candidates [5/20/2026] (Recording)

FREE COACHING SESSION GIVEAWAY FOR LIVE ATTENDEES. Private equity recruiting is extremely selective, and firms are looking for more than just strong technical skills or prestigious backgrounds. This session is for students and early-career professionals who want to understand what actually drives candidate selection at PE firms. You’ll learn how investment judgment, deal experience, and narrative fit factor into hiring decisions, and how top candidates position themselves across resume, networking, and interviews. Join live to hear perspectives from a panel of experienced PE coaches who have worked closely with successful candidates and understand what differentiates those who receive offers. The discussion will follow a curated set of high-impact questions, offering structured insights and real examples of how top candidates are evaluated.

Your GMAT Mistakes Called. Did You Get the Message? [5/20/2026] (Recording)

Ever feel like your GMAT prep isn’t paying off the way it should? You’re putting in the hours, solving question after question—yet your score isn’t reflecting your effort. What’s going wrong? In this interactive webinar, “Your GMAT Mistakes Called. Did You Get the Message?”, expert GMAT coach Jennifer PD will uncover how to learn from your mistakes. From flawed study strategies and timing issues to misreading questions and falling into trap answers, we’ll break down the patterns that silently hold you back. You’ll learn how to identify your personal weak spots, avoid repeating the same errors, and approach the exam with sharper strategy and confidence. Whether you’re just starting your GMAT journey or looking to push your score to the next level, this session will help you turn mistakes into meaningful progress.