---
_db_id: 100
content_type: topic
ready: true
title: optimizations and big-O
---

Here are a few good resources on Big O and optimization. Learn enough to understand what Big O is, when and why do we implement it and please give us feedback (or pull requests) on this page if you think any improvements can be made.

### Readings
  - [Big O Notation](https://guide.freecodecamp.org/computer-science/notation/big-o-notation)
  - [Article](https://www.freecodecamp.org/news/my-first-foray-into-technology-c5b6e83fe8f1/)
  - [Some more material - Stack Overflow](https://stackoverflow.com/questions/487258/what-is-a-plain-english-explanation-of-big-o-notation)
  - [Big O Notation Cheatsheet](https://www.bigocheatsheet.com/)

Make sure you checkout the Big O Cheat sheet, It'll give you an understanding on the performance of different data structures(Arrays,  Stacks, Queues... etc) that you use on a daily.

### Videos
  - [Big O in 5 minutes](https://www.youtube.com/watch?v=__vX2sjlpXU)
  - [Big O in depth](https://www.youtube.com/watch?v=kS_gr2_-ws8)
  - [Big O and Time Complexity](https://www.youtube.com/watch?v=D6xkbGLQesk)