Creative Commons Licenses
Publishers and authors who want their work to be Open Access (OA) will frequently assign it a Creative Commons License. This license defines what the copyright holder allows you to do with the work:
Finding Open Access Journals
Many journals now offer the option to publish your articles as open access, but if you would like to find an entirely open access journal, try these.
SHERPA/RoMEO (also includes info about copyright policies)
More Resources about Open Access
How to Make Your Own Work Open Access (Harvard Open Access Project)
What is Open Access? (Open Access Scholarly Information Sourcebook)
Selective List of Open Access Publishing Fees (UC Berkeley)