Can someone please help me:/

Anatomy & Physiology, especially if you haven't taken it yet.

Get a Med Math book like Davis's Basic Math Review for Nurses and practice medicine calc questions like on DosageHelp.com - Helping Nursing Students Learn Dosage Calculations

Definitely look at the prerequisites your school is requiring and get working on them! Nursing school is hard enough without having to worry about random Humanities (or other G.E.) courses at the same time.

You might want to also get your CNA, PCT, or MA certification so that you can build up some "related" experience in the meantime, if you're not already working in a healthcare setting.

You can start on things like knowing the bones and muscles but in all honestly, there's so much you will need to learn that I can't really see trying to cram in a bunch now. Added to that, it's next to impossible to know what your instructors will deem as important to know and what they won't. Each has their own style.

Your time might be better spent getting your life organized and getting yourself mentally ready for school. (I'm not saying you aren't organized now, but think about things like who will take care of your child if she gets sick and you have class, what will you cook for supper, what's your study plan, etc, etc. Nursing school is a huge time commitment and the better prepared you are mentally, the easier it will be.

I do agree that getting your pre-reqs/co-classes out of the way is a great idea. The less you have to work on while taking nursing classes, the better. (For example, we could take Nutrition and Nursing Perspectives before we were officially into the nursing program. We also had to have A&P, Microbiology, etc as part of our graduation requirement. The more non-nursing classes you can take before you start your actual classes, the better off you are.)

Best of luck to you! Sounds like you are going to do great!