Here are some of the important resources that I found useful and hope these will be helpful for you too as well,
👉 DevDocs.io
Well-maintained and organized API Documents for various libraries and frameworks,
👉 Big-O Cheat Sheet
Big-O Cheat Sheet for Algorithms' Time and Space Complexity,
👉 Oh Shit Git:
Messed up your git branch and want to fix your git issues? Follow,
👉 Grind 75:
For Data Structures and Algorithms (DSA) strategic preparation you can follow,
👉 OverAPI.com
A website that provides a collection of cheat sheets for various programming languages and frameworks,





