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:
https://github.com/sbupgsa/resources
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.
(Unofficial) SBU Physics Comprehensive Resources 