What's the next step after submitting proof of credit?

I got an internship at my favorite mag and i submitted my credit approval papers but this is the first time I’m doing an internship for credit and i don’t really know how the proces works, i have a start date and everything but is there another step after submitting the paper work. I know this propbably sounds stupid but I just want to know if theres something else I’m supposed to do or just wait until August to start…Has anyone gone through this process?