No, you shouldn't need to bathe rabbits. They clean themselves 
If they aren't keeping themselves clean that can be a sign that something is wrong.
To clip their nails, it can be helpful if you have someone else that can hold them. If you don't have anyone who can help, you can gently wrap them up in a towel to make it easier to handle them. Some bunnies can be tranced - they will stay laying down on their backs without moving. If your bunny can be tranced you can cut their nails while they are laying on your lap, but out of the 5 rabbits I've owned I only had one that would stay tranced.
Just like cat or dog nails, you want to look at the nail and find the quick, the pink part, because if you clip that it will bleed. Just clip off the tips making sure not to cut the quick. It can be hard at first, especially if you have a rabbit who struggles, but you should get the hang of it.
This site has picture that might be helpful.
http://www.mnhouserabbit.org/care/nailtrimming.html
If they aren't keeping themselves clean that can be a sign that something is wrong. To clip their nails, it can be helpful if you have someone else that can hold them. If you don't have anyone who can help, you can gently wrap them up in a towel to make it easier to handle them. Some bunnies can be tranced - they will stay laying down on their backs without moving. If your bunny can be tranced you can cut their nails while they are laying on your lap, but out of the 5 rabbits I've owned I only had one that would stay tranced.
Just like cat or dog nails, you want to look at the nail and find the quick, the pink part, because if you clip that it will bleed. Just clip off the tips making sure not to cut the quick. It can be hard at first, especially if you have a rabbit who struggles, but you should get the hang of it.
This site has picture that might be helpful.
http://www.mnhouserabbit.org/care/nailtrimming.html
