Most agility clubs require the dog to have at least a good recall before starting classes, a good wait is also handy. If you do do obedience classes make sure your dog is as comfortable doing things on your right side as well as your left if you are thinking of doing agility, my 1st dog would only do things on my left (especially weaves).
I have a few jumps, a tunnel, weaves and an a-frame at home, but I wouldn't recommend you do them at home until you are shown how to do them safely in class (I've been doing agility for over 10 years).