http://www.youtube.com/user/DasileW
this guys channel is great.
you should first try to master some easy moves like skipping and clapping, and practise everyday at least 1,5 hours.. after that your control should get better.
^ Words from him.
Who the fuck would want to practise groundmoves for that long?
I think Groundmoves is just doing what you want with the ball, even more than freestyle is.
There are no rules from where to begin, and what basics to train to be able to do other stuff. You just go for it.
Look up groundmovers and Streetplayers like Toft, Achie, Randall, Nelson Bencok, Ratinho or even groundmovers who are a little less skilled like Morten Høier, DasileW, Matthew and Jazz... Even look up people with special styles Like Canine and Thurn and Sean. Then also look up upcoming groundmoverss such as the Italian Street Killers, Pavaw and even myself.
Then you will find a big range of different styles and tricks.. and then you just practice what you like and build your own style from there (: