Not to discourage you, but breeding is more than just ask "how do i breed them?" you need to do your own research and than come back and ask if there is something specific you want to know.

Once you have done your research there is also many questions you will need to ask yourself, because you just don’t go from "how do i breed them?" in other word knowing very little to "starting a business with them"
Here are a few of the questions you need to ask yourself?

What do you know about breeding, have you done any research?

Do you have the time and space to breed?
Will you buy or build an incubator?
Can you individually house a X number of hatchlings?
Will you buy or build a rack?
Can you provide for an X number of hatchlings?
What is your plan when it come to selling those hatchlings, are you prepared to keep them all if they don’t sell?
Do you know how to start hatchling?
Do you have a source that will provide you will live rat crawlers or hopper mice for you hatchling, or are you prepared to breed your own feeders?
etc.

After you have done some research and if than you still want to get into breeding many people here will be happy to help you.