Ok... bear with me. Im new to this technical lingo of audio talk.

What is the difference between an amp and a pre-amp?

How do you CORRECTLY use an amp with a receiver to use to run the main set of front speakers?

What does a pre-amp do over just an amp?

In another post i stated that i own a NAD c272 and am aquiring a Elite 82. Im hoping to use the NAD to run my 80's up front so i wont over heat or strain the Elite.

How does one hook this up correctly?

Also... if getting a blu ray player soon... do you just hook this straight up into the HDMI on back of receiver????

Newbie questions i know, but i had to ask somewhere. haha