What I wrote for a beginner at Lichess.org

I looked at your last game. Never move the same piece twice until you are done developing all your pieces. There are exceptions but those exceptions are rare.

"In order to improve your game, you must study the endgame before everything else. For whereas the endings can be studied and mastered by themselves, the middle game and opening must be studied in relation to the end game."
-- Jose Raul Capablanca

I recommend "Capablanca's Best Chess Endings: 60 Complete Games" by Irving Chernev. Mr. Chernev makes endgames interesting instead of tedious.

One more thing: Take advantage of the Lichess feature called "Learn from your mistakes" which you should use after every game.

Another one more thing: Never play blitz because it's not real chess. 10+0 works for me but you might want to try 10+10. 

The most brilliant thing you ever did was discover this place. For studying chess and playing chess this is the best website in the universe.

https://en.lichess.org/forum/general-chess-discussion/newbie-player-here?page=2