Advice.

[MNomadic]

Since you're heading to the library tomorrow, you might want to check and see if they have CLEP/REA books on the courses you have mentioned above.  There are so many CLEP prep books at the library; it's the best resource for physical books unless you want to rent a specific one from Amazon or Chegg.

Went to the library today and they only had the 2018 Study guide. However, they had me fill out forms that would get me the REA books shipped to the library within two weeks which is pretty cool. The only one I didn't ask for was the Information Systems one because I can't seem to find an updated one for the new test format. Any suggestions?

Some libraries may have E-resources as well, such as freading, hoopla, libby/overdrive and some others. Whatever physical books I couldn't find, I was able find through those resources.

The only online resource I found that's available in relation the CLEP is access to a database full of Practice Tests.

That's a great resource!