I'll start by saying that many folks will find it a sacrilege that you not buy your bike at a local bike store. There are important advantages to doing that - bike fitting, repairs, etc. But there are those of us who wanted their first road bike for NTP and didn't want to spend $1000+
I got a Motobecane Grand Record last year with shipping for under $600 from sprtymama and it has been a great starter bike. You do need to know your frame size, and I recommend paying someone for a fitting.
I'll buy my Cervelo at Conte's when I'm ready (hopefully this year.)