Maybe you underestimate yourself. Read the documentation again. Sometimes I have to read a sentence about difficult topics 2,3 or 4 times until I understand it, every time more carefully. If I still don't get it after that, at least I know what question I would ask someone else to understand that sentence.

Maybe your problem is more fundamental. Do you know what a reference or a method is? Do you know what a polygon is? If not, these may be the topics to first get information on.