New to Asterisk

IS there a location explaining what exactly Asterisk does and is capable of doing and how do I put to use and see how it functions in a step by step guide.
Thanking you in anticipation.

Following are the sites will surely help you.

  1. archives of all the question on list
  2. after your starting config you may face issue that time you send topic on diffrent forum suhc as this
    also subscribe asterisk-user list from site. so u come accross diffrent topic which deal with Asterisk & its use.
    Also download Asterisk TFOT book. google for it.
    PM me you mail id. i will send you possible links & 3 pdf book. will help you