What? Please help on accuracy!

I just joined chess.com, and I am very confused on the accuracy rating. What exactly does it mean and how can I improve from it? Also if anyone has any good courses, vids or books to read on chess please post them so I can read them.

It's a % score

How will it help me improve my game though?

Accuracy is given in percentage which tells you that how many moves of yours was same as chess engines, (i.e) it gives you the percentage of finding the right moves. Greater percentage means you have found more correct moves!

To simplify, accuracy is something like marks that you get in your exam. Here chess engines are your evaluators!

When you analyze your games, you would get a feedback for every move, like.. blunder, mistake, inaccuracy, good, best (or) excellent, starting from blunder being the worst move to best or excellent being the best possible move.

The more number of good, best, excellent moves you play, greater your accuracy would be. 

The accuracy score in practice depends also on the complexity of the position. If there is some complicated tactical pattern that could win you material in four or five moves, you miss it and play a normal, safe move instead, your score is lower. So looking only at the score does not tell you how well you played.

Accuracy (CAPS) is misunderstood by a lot of players, but IM @DanielRensch describes it better than I could, so here ya go

Thanks so much for the help!