First time Rabbit Owner...?

What do you mean by shaking. If it is a violent shaking like a seizure, then he could have epilepsy induced by a plant he ate or just as a medical condition. If it is just his feet shaking, I've found it's just a common trait of lop rabbits (I don't know why but it's only been in lop rabbits I've had that they did this) but it is totally safe. You should re-assess if you really think that this is something dangerous or not and call someone who is knowledgeable about rabbits. If you can find a breeder in your area, they can help you diagnose the problem without huge vet bills and they are able to help the rabbits more than most vets because there are very few vets that are specially trained for rabbits.

Do some research on proper rabbit care:

www.pet-rabbit-care.com/

www. freewebs.com/creekside_rabbitry is my site feel free to check it out and learn some on bunnies!

i agree w/ mel u shuld go to the website and check it out it may b sick so if u dont find anyinfo on wat ur rabbit is doing u shuld take him to the vet

He could be sick or fed him too much or dont let him run ariund too much

Please look at www.rabbit.org

It has all the information you will need, from proper regular care, to possible health problems.