There have been so many questions from so many people regarding CP and how to practise, so I thought I’ll make a comprehensive video demonstrating the major resources to prep / practise from in one in order to help people 
Video: Comprehensive Resource Guide for Competitive Programming and Interview Preparation!!! - YouTube
Let me know how you found it!!
List:
CCDSAP: Learn Data Structures and Algorithms | DSA tutorials | CodeChef
Learn DSA: Contest Page | CodeChef
Learn DSA Series YT: CodeChef DSA Learning Series - YouTube
CSES: CSES - CSES Problem Set - Tasks
Junior Training Sheet: Training roadmap for newcomers - Codeforces
Sameer’s list of algorithms: https://www.quora.com/What-is-a-list-of-data-structures-that-a-competitive-programmer-must-know/answer/Sameer-Gulati-3
CP Handbook: https://cses.fi/book/book.pdf
CP - 1 , 2: https://cpbook.net/
Codeforces EDU: Courses - Codeforces
USACO guide training site: Introduction to DP
William Fiset: Data Structures Easy to Advanced Course - Full Tutorial from a Google Engineer - YouTube
Second Thread: SecondThread - YouTube
Errichto:Errichto - YouTube
Kartik Arora: Kartik Arora - YouTube
Morass: Problem Topics - Codeforces
(Also check out Vplanet , Galen, William)
This awesome list: https://codeforces.com/blog/entry/23054
Interview Prep
Leetcode: https://leetcode.com/
Patterns: Leetcode Patterns
ADJA’s site: https://interviews.school/linkedlist
Techdose:Techdose - YouTube