This legal encyclopedia offers articles on a wide range of practice areas including Bankruptcy, Disability law, Family Law, IP, Real Estate and Finance.
You can access the encyclopedia here: http://www.nolo.com/legal-encyclopedia
WEX is the Legal Information Institute's free legal dictionary and encyclopedia.
You can access it here: https://www.law.cornell.edu/wex
Directory of Open Access Journals
The DOAJ provides access to Open Access journals.The legal sub-category contains 139 journals.
You can access the DOAJ here: www.doaj.org
Google Scholar offers access to academic journals including legal articles. While full text of all articles is not available, Google Scholar does provide valuable citation information.
Google Books is a great source for all manner of books and can be a source of free legal secondary sources.
Directory of Open Access Books
This database provides access to open access books on a wide range of topics, including law. It is searchable or browseable by title, subject or publisher.