It took me over a year to figure out how to get them to breed.
Buy a Gram scale. Bi weekly weighing of females. ( 100 gram weight gain within a week indicates she has eggs)
Get a few good males
3.1 ratio works good
Buy or make a rain chamber
(I do sell them and they work well) you can also google them and make one with plastic tubs.
Search for shops near you that have live blackworms. You will need around 2lbs for every 100 tadpoles to raise them.
Have multiple tanks,tubs or whatever you choose to raise them in. You need filters and tanks heaters.
Another thing to keep in mind is a person to sell them all to. You really don't want to hold onto a few hundred babies.
I get my babies as big as possible during tadpole size. By the time all of their legs come in and tail obsorbs they are quarter size and up. I have them all sold within a week out of the water.
You can sell a few different ways. One at a time to a hobbyist($15.00)ea. A few at a time to various pet stores($10.00)ea or 50 or more to wholesalers and dealers($4.00)ea. For normals.
The longer you keep them the more they cost.