Congratulations! It is an exciting time and you should enjoy every minute of it. I have posted over 200 posts on my blog covering almost everything for your wedding. Check it out and hope it answers your questions or helps you out at www.ijustsaidyes.com.
This forum is a great resource as well to ask any question and many vendors will be sure to reply with wonderful suggestions and ideas for you.
Wish you the best!
As for actually planning your wedding, I think the two most important things to do first are to secure both your wedding ceremony venue and your reception venue. Where I live in Cleveland, Ohio, they can be the hardest to find and to reserve. I've known couples to reserve their venues two to three years in advance. Everything else seems to fall into place once this is done.