Hello! Currently i'm apart of the United States Marine Corps and i have 4 years to serve. Considering my job will be busy i will most likely not have enough time to go to college while active duty. I've always considered becoming a nurse but i joined the military for education financial security and for other reasons as well. My question would be what kind of subjects could i study while in, whether it be through books or online, that would give me an understanding of things for when i take my prerequisites for nursing school in college after i leave the military?