You will find the "self-help" manual.  It has all the information you may want.

Yes, please read the Newbie Manual and then unlock your CAPS lock.

ac⋅ro⋅nym  /ˈkrənɪm/  Show Spelled Pronunciation [ak-ruh-nim]  Show IPA

noun 1. a word formed from the initial letters or groups of letters of words in a set phrase or series of words, as Wac from Women's Army Corps, OPEC from Organization of Petroleum Exporting Countries, or loran from long-range navigation.

http://dictionary.reference.com/browse/Acronym