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Interactive guides for teams and practitioners. Deep-dive explainers on engineering, business, and ML topics.
9 guides and counting
The Trader Joe's Story
How a Stanford MBA turned LA convenience stores into America's most beloved grocery brand.
Git Worktrees
Multiple branches, zero stashing — how worktrees let you work in parallel.
MicroGPT
Build a GPT from scratch in 150 lines of Python.
OAuth 2.0
The authorization framework behind every 'Sign in with Google' button.
OpenClaw
A unified gateway for multi-channel AI communication.
Precision & Recall
The most important trade-off in machine learning, visually explained.
Seed2.0 LLM
How ByteDance's frontier model hits GPT-5 benchmarks at 1/10th the cost.
Stripe Payments
How Stripe processes a payment in 7 seconds.
TikTok Algorithm
How the For You Page decides what you see next.
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