Firstly, you'll need to take them to the vet. Afterwards, find out how old they are. If they're too young, you'll have to raise them until they're old enough to be adopted. If they're old enough, place ads in the newspaper and people will most likely come and buy them. If not, you'll need to give them to a shelter when they're 1 year old (I say one year because shelters suck at taking care of kittens/puppies).
~SL~