Hi.
First, you need to look at how much you already know about rabbits - do you have any at the moment? Have a good read of the stickies and other info on here. Also read the RWAF website.
Rabbit boarding isn't an easy way to make money at home, and you would need to set up a proper business with insurance, etc.
I would suggest looking at some bunny boarding websites. Consider whether you could afford the accommodation (initial outlay would be expensive, and it could take some while before you recovered the costs). Knowledgeable rabbit owners would be looking for large hutches (6ft ), plus a big run. You would need to be able to disinfect accommodation between clients, so you would need to put the runs on concrete. Expensive again.
Once you've done more research, then contact some local oarders and ask to visit. You will then be better informed and will get mmore from the visits.