How do I even get started?
Start casual! Learn the easy stuff first. Change your thesis as you read. Don't lock in before you know you can make your argument.
But don't forget to keep track as you go, even if it feels like you're not really even starting. There are 3 basic ways of keeping track of your research:
Cite as you write or cite it all at the end. Either way, you have to hold on to everything you've read to prepare for this paper.