Welcome Horsemomma87. Congrats on your first Mini Horses. You will have a lot to learn. Your breeder should have been able to educate you in everything you needed to know. However, if he/she didn't, then your very best source of knowledge and advice, is to join the Mini Horse forum, Li'l Beginnings. Miniature Horse Forum - L'il Beginnings Miniature Horse Forums
Tons of extremely knowledgeable folk there, to help with any question you might have.
I hope you will share pics of your new horses. What is their breeding and what are your plans for them?