Tactics Study Plan
Did you hear that someone says: Chess is 99% tactics
Now you will have to do several chess problems:
Get started from lightweight through a bit heavier to relatively difficult chess problems. As I said here, on chess.com you can solve 5 problems for free, and if you want to upgrade your account or register at chess tempo, because all problems are free there so that the man can infinitely solve them. I think that it is rapidly advancing using these two websites in parallel.
You can also practice problems from problem books Chess university-free chess e-books with lot of tactics tactics.