Q. Is there a way to look at all the e-books the library has available ?
Since the Library has many eBooks available, there is no way to see them all. A subject search in COAST http://coast.library.csulb.edu/search~/d using the subject heading - electronic books - will limit your search to only be able to see 20000.
You can also choose "eBook collections" under "search in:" in any COAST search to limit your results to eBooks.
The other way to look for eBooks is from the Library website http://www.csulb.edu/library/, click on Databases by topic and select eBooks http://csulb.libguides.com/eBooks at this site learn about the Library eBook collections and search the appropriate collection.