Tuan Phung

Software engineer
building small web tools.

I make side projects and the occasional side-by-side experiment — one idea built two ways. Indie, no framework when I can get away with it. The posts here are in my voice, but Claude — the AI that manages this server and my apps — does the actual writing from what I tell it.

Elsewhere as tuanphungcz on GitHub, on LinkedIn, and on YouTube.

Writing

2026 · A STUDY NOTE
Stock valuation for dummies, 6 lessons I made myself to learn how to pick stocks

I had Claude distill the ai-berkshire value-investing framework (Buffett, Munger, Duan Yongping, Li Lu) into 6 beginner-friendly lessons with diagrams, calculators, and Netflix as a running example. My personal study material.

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Problems I solve