Counter Strike Chess Club

Lichess [Free]
• Puzzles[lichess.org]
• Basics[lichess.org]
• Coordinates[lichess.org]
• Tactics[lichess.org]
• Analysis[lichess.org]

Youtube
• Chess Steps by GothamChess
• Many instructive games

Book Recommendations
• Bobby Fischer - My 60 Memorable Games
• Laszlo Polgar - Chess 5334 Problems, Combinations and Games
• The Mammoth Book of the World's Greatest Chess Games
• Jeremy Silman - Complete Endgame Course
• John Watson - Mastering the Chess Openings