Thanks for the replies, I am going to be studying to become a veterinary nurse, so from what I have read they strongly prefer I do work-based study, with college courses as well. I have been reading up on it since I posted, and it looks like because it's further education, being that I am married to a UKC for over a year I should be eligible for home fees. My main reason for wanting home fees was because there's a chance I can find a training practice who will pay my college fees, and I can only assume they wouldn't appreciate paying out for an international student, but would be willing to do so if I am eligible for home fees.
I will look into financial assistance for it in case they won't pay, I don't believe my husband gets any tax credits but we're going to have to look into child care assistance as I imagine my pay will be low but I'll be working full-time, so most of it will go towards child care.
I've been here 2 years since March, looking to begin this whole thing in the winter I think, as the exams are normally done in August or December-January, I thought it might be better to wait as my son is here now for the summer, much easier to plan for starting in the winter. I get ILR next march, and from what I understand I can apply for citizenship shortly after that.