Before you purchase your Rhode Island chickens you will need a chicken house for them. Then when you have them, you need to get them acquianted with where to lay their eggs. When they are 20-204 weeks old they will begin laying eggs.
These are hardy, good "backyard" birds, excellent layers and fryers. Consult your Extension service or breeder for information on housing, feed, they need constant fresh water, and forage-room.
The same way in which you would raise any domesticated chicken breed. Start with few hens and a rooster in a secure and clean hut and let the magic happen.