Reference resources are a great way to get started with your research. They can help you gather fast facts about a topic, focus your argument, and find lists of further readings written by experts in the field. Use the indexes and tables of contents to understand what you will find in each and go from there. These are all common resources and most will also be available at a large public library.
Reference resources are the best way to get background information on your topic. Here is a selection of high quality sources: