I'm gonna skip to the chase and give you the basics of my situation. I'm very weak at physics as i didn't take any high school classes (wasn't interested at the time) and also didn't finish high school due to personal reasons. I'm fairly good at algebra, some calculus but could use a lot more learning in the math department and willing to work my behind off to do so. I did go back to get my NCEA Level 2 & 3 (Equivalent to GED) but at that time I wasn't sure what I wanted to pursue study-wise, so didn't focus so much on Math/Science. My plan is to self-study as much math as possible (calculus, linear algebra, differential equations etc...) within a year. That means I may have to start from basics to really get a strong grip. After that I will learn physics from scratch then hopefully move to more advanced levels of physics. I have a night-shift job so have hours to study (10 + hours) throughout the day, access to books & good online sources. After I hopefully have a good understand I wish to enter University (University Of Auckland OR Massey University). Now, I know you can't actually give me an exact number but is it possible do you think to learn a greta amount of math + physics within a year MYSELF? I mean considering I will have 10+ hours per day 6 days a week to learn? Cheers I want to do Astrophysics.