Welcome!
I almost commented "humorously" that you answered your own question in the title already. HELP-files are where you'll find most answers. There's about 1800 pages to read, so that gives an idea of how versatile a software you're dealing with. Usually, however, fluent use of Help-files requires knowing the terminology to find the right search words, and that can sometimes be tricky. Obviously, there always are explanations and details in the manual one simply doesn't understand or find, then this is the right place to ask.
I assure you, people are more willing to help the ones, who have done some homework.
To me this forum has been of great help in many kinds of situations.