Useful Resouces for Competitive Programming

Websites to practice

Websites to track progress

StopStalk Here you can track your progress accross various websites and compare it with your friends and professional competitive coders.

Important Problems for Interviews

SDE Sheet Covers all the important topics for placements(with solutions).
Cheat_Sheet Covers some important problems
must_do Here you can find some of the most frequent problems asked in interviews

Important book to practice for interviews

Crack_the_coding_interview An important book to up your interview skills