I definitely suggest getting the supplies before breeding :) Trust me! If I had known i was going to have over 200 babies, I would have gotten tons of jars ahead of time.
Try to get brine shrimp eggs first off. Any form of live foods is a must. I have seen first hand the difference between growth of a fry with no live foods, and fry with live foods. Live foods for the win!!
What tail types are you breeding? What is your goal? Are you breeding for experience, fun, money, etc? Make sure you can sell/give away your babies :)