Here is a link to the PGSA resources. This is a open, general list in which any SBU student can upload resources that would be helpful when studying for the comprehensive exam. Simply read the readme and download:
P.S. This is a public Github, so anyone can upload useful resources. If you find any useful resources out there for the comprehensive exam and would like to share them, simply make a github account and upload them to the website.
Additionally, for more solutions, check out physics pages. Which is an excelent website that has solutions for many different subjects and textbooks.