RF communication?

Starting with my robot-lawnmower project and thinking of using RF to get the thing to navigate around the yard. But since I have absolutely no experience with RF, then I'd be glad if anyone could refer a site or two with nice tutorials. Don't even know what kind of transciever IC's to buy to start practicing with. (2.4GHz, 2.5GHz, 3.5GHz, 5.8GHz of sub 1-GHz...)

So any help is welcome cause I'm stumbling in the dark at the moment.

Hope it will be helpful for you

Hi

http://www.rentron.com/ruf-bot.htm

Perharps you would like to use this website as a reference

I am also a newbie myself, hope it can helpful to you