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What is TIL (Today I Learned)?

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Today I learned about the concept of TIL - “Today I Learned” - a format for sharing small, digestible pieces of knowledge.

What is TIL?

TIL posts are:

  • Short and focused - Usually just a few paragraphs
  • Practical - Something you can use immediately
  • Informal - Written conversationally, like notes to yourself
  • Frequent - The low barrier encourages regular posting

Why TIL?

The TIL format serves several purposes:

  1. Personal knowledge base - Quick reference for things you’ve learned
  2. Learning reinforcement - Writing helps solidify understanding
  3. Knowledge sharing - Others benefit from your discoveries
  4. Low commitment - Easier to maintain than full blog posts

TIL Best Practices

  • Keep it under 5 minutes reading time
  • Include code examples when relevant
  • Link to sources for deeper learning
  • Don’t worry about perfection
  • Date your entries for context

Example Topics

  • Command line tricks
  • Programming language features
  • Tool configurations
  • Debugging solutions
  • Workflow improvements

The beauty of TIL is its simplicity - if you learned something today that made you think “oh, that’s neat!”, it’s worth capturing in a TIL.