I assume by your avatar that you purchased a Felt? If so, which one? I demand pics!

Shifting is really up to the rider. I have weak and pathetic legs so I tend to not ride on the big ring as often as some of the stronger riders that I know do.

I'm also a spinner by nature. I'm usually spinning at a rate of 110+ RPM just because it feels more natural to me.

The best advice that I can give you is to just go out and keep riding. You will figure out what works for you.