I write/type it all out until I retain it. It's kind of difficult to explain how I learn/study, because it just kind of comes naturally for me. I never had to study in high school and in college, I just make sure I attend class and do whatever recommended review work my instructor gives us, and then I review the material the night before the exams. I've somehow managed a 4.0 GPA, so I guess I must be doing something right. If there is anything I don't quite understand, I'll look it up through other sources and write it out in my own words or whatever until I do understand it. There's a lot of overlap in my courses so sometimes just having another instructor explain it in their words will help me immensely. I've found that I'm a very visual learner, so I use a lot of mnemonics and keywords, or I map things out until they make sense to me. Drawing pictures or mapping things out is huge for visual learners. I've found that I can often help those I tutor by re-explaining things the way I understand them. It really is different for everyone though.