I wouldn't say it's bad that you started with Revolutions, but you may need to unlearn some habits from Rev. I started with Civ 1, and though I by no means play on the higher difficulty levels, I am quite familiar with the games. Everyone likes saying revolutions is dumbed down, it really isn't, it's just a far smaller scale.
The basic concepts pass over, the tech tree for example, but my best advice would probably to watch
this series of videos, unfortunately the second game ends early and the creator disappeared, but the narrator really nails a lot of key concepts in Civ iv and it may better prepare you for your own conquests.