Briliant
How to beat your friends in chess?

Take a lot of Opening and End Game lessons on chess.com. Don't try and focus on a specific opening however and just focus on learning how to combat certain openings.

I know people get tired of hearing this...I did too..but do some puzzles...then some more puzzles...then just change the name the tactics if it gets boring...after that do more and more and more puzzles until your brain is fried and sleep...for like 3 hrs max...then do tactics puzzles tactics puzzles tactics tactics PUZZLES TACTICS PUZZLOKDEJFIHEIOFQH8329RHFEWFVDJKV
Just keep playing more chess games