The programming habit I wish I started sooner

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Reading open-source code is one of the most underrated ways to grow as a developer. Rather than rushing to contribute, spending time exploring codebases of tools you already use teaches scaling patterns, performance techniques, and real-world best practices that courses and books rarely cover. Practical advice includes cloning repos of projects you care about, exploring specific features that interest you, and even compiling projects from source to understand build systems. Recommended projects to explore include the Linux kernel, FFmpeg, GitLab, React, and open-source AI models like DeepSeek. The post also promotes PostHog as a developer analytics platform.

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