Everyone goes through the same confusion don't worry (I was at the same point a few months ago) I would say start by trying to take the main points that each journal article/book etc. make surrounding your topic. After this try to look at comparing them, this will help you to see where the literature agrees, what specific areas most of the literature is surrounding and show where there are still existing gaps.
That really is all the basics there is to it and hopefully, once you have done this you'll be able to speak to a supervisor for some more specifics regarding your topic. Best of luck!