because I can't understand it ? after I translate it, I also can't understand it. what can I do to solve this problem?

please i want alot of advices to do that (how to increase my rating ) i am using c++ and i don't know how to do that if you have any advice tell me and I will do thank you for your help if you will tell me practice i want to know from where and what is the rating of this questions that I will practice from ?