Access to general library electronic content is provided through Morale, Welfare and Recreation (MWR) Libraries based on your service. Most are CAC authenticated, though you should be able to contact an MWR Librarian for access if you meet the requirements and do not have a CAC.
Army: http://mylibraryus.armybiznet.com/
Air Force: http://www.myairforcelife.com/libraries/
Navy: https://www.NavyMWRDigitalLibrary.org
Note: If you are Army Active Duty, Army Reservist, National Guard, an Army Retiree, or a dependent without access to an MWR Library (we do not have one at Naval Support Activity Bethesda), you can register online here: https://mwrlibrary.armybiznet.com/selfreg
Please fill the form out in ALL CAPS.
What resources do MWR Libraries offer?
Journal Databases
Genealogy Databases
Audio Books
Career Guidance
Automotive Repair Manuals
Consumer Reports
Encyclopedias
Financial Information
E-Books
Language Resources
Regarding Navy MWR:
To access audio and ebooks, you may need to request a DS Login account, when streaming content is blocked from DOD computers.
From https://mwrdigitallibrary.navy.mil/login:
Click the "Login" button under "DS Login."
Select "More Options," then "Need a DS Login?"
Follow the instructions to create your account.
FBCH Library