We now have the Diagnostic Statistical Manual 5th edition available in eBook. Use the link below to access the full text. There is no limit to the number of users at the same time on this eBook.
These electronic sources will give you basic overviews of concepts in the discipline:
Professors: Need a guide tailored for your specific course or assignment? Contact me.
Students: Have a question or need help using a resource? Ask a Librarian!