Read primary sources.

If you’re in tech, this means:

• Official documentation and specifications
• Source code
• Research papers

Secondary sources, like Stack Overflow or tutorials, have their place, but suffer from several problems:

• Secondary sources go out of date
• Secondary sources are more likely to be wrong, or paint an incomplete picture

Early in my software journey, I spent a lot of time reading tutorials and Stack Overflow questions, as it seemed easier than reading primary sources. When I finally learned to dig into official docs and source code, I realized how much I had been missing.