Where can I find out what an acronym means?

There are all sorts of acronym lists. Here are some from UCLA and outside. 
 
 
 http://www.oit.ucla.edu/CommonDocuments/Acronyms.pdf (technology related, link corrected from icompass) 	 http://www.library.ucla.edu/committees/laucla/links/acronyms.htm 	 http://www.library.ucla.edu/url/referenc/rco/acronyms.htm