Don't know much about audio, what do I need to do?

[RonSwanson]

I'm honestly an idiot when it comes to audio...I'm getting into my first bit of surround sound now that I'm moving into a bigger space for the first time.

This is what I'm planning on getting: Onkyo 7.1 HTIB

http://www.amazon.com/Onkyo-HT-S9100...194593&sr=8-31

Seems like the best HTIB to me...and yes, I am pretty set on a HTIB, so don't tell me I can get separate speakers for better, I know you will all try!

Basically, I will have ATT Uverse HD, a PS3, a 360 for HDMI. What exactly do I do to get those connected to surround sound? I've never understood it, and it's probably the simplest thing. Do I connect the HDMI's from those systems to the receiver, and then the receiver to the tv?? Help me out, I'm pretty lost. Do i need to keep anything else in mind? I truly have never had speakers other than my bravia's speakers!

Thanks!!