I am an Open Access Ambassador for my institute (Max Planck Institute of Biogeochemistry). Here are some online resources on open access publishing and related topics. Please let me know if you'd like me to add other links.
SPARC-SPARC is an organization promoting open science and its website has good information on the topic
Right to Research-This is a coalition supported by SPARC and has many resources on open science
DORA-Join the movement!
DOAJ-Interested in publishing open access? Check this list of OA journals
Depending on your research field, you might be able to archive your publications:
Cornell ArXiv