This page contains general online databases and newspaper resources. It is for general research not necessarily specific to Congress or legislation. This is a good place to build background knowledge, research your issues and learn about them in context, or learn about different politicians more broadly. Lastly, if you're interested in acquiring books, there are links to the catalog on the right. It would be wise to do this as one of your first steps as some books might take a few days to arrive (and books are not required for this project).
[Reminder: Library Catalog is for local UIUC resources, I-Share is a state-wide system and is used if UIUC resources don't have what you need, and WorldCat is for when both the local catalog and I-Share don't have what you need. I-Share and WorldCat resources take a day or two more to arrive.]
Some books you might search for include How Congress Works or American Congressional Dictionary.