Useful Chess Websites:

https://chess24.com/en (Great for watching live tournament and commentary. Get the App!)

https://lichess.org/ (Completely free, Great for playing or for tactical puzzles. Get the App!)

https://www.chess.com/ (Great for playing and some nice paid features. Get the App!)

https://chesstempo.com/ (Best site for tactical puzzles)

https://www.chessgames.com/ (great online database with daily puzzles)

https://www.newinchess.com/ (Best site to purchase the latest books)