I don't mean this to be rude, but, you will get better responses if you

1) Try Wikipedia for a generic introduction
2) Ask specific questions, if there's something you don't understand.
3) Use conventional English - w3 d0n't d0 l33tsp34k.

Please take this advice in the constructive spirit in which it is meant. The open source community can be very welcoming, but, we have a concept usually denoted by the letters RTFM. Please research this first...