I'm mostly a kinaesthetic learner, so for me "doing" on some level helps me learn a LOT. This has been really helpful to know as an adult, but IME they don't really go into that when you're a child, so my grade schooling didn't have the benefit of that knowledge.
For example, for my equine anatomy and physiology, I bought the colouring in books and if I could've I'd have got the model to put together. For nutrition, I cut information off of feed bags and pasted them together into collages. For those subjects where you just plain have to learn stuff off by heart, I wrote, wrote, wrote...preferably with lots of different colours and headings and sub-headings etc. My original classnotes are colour coded and surprisingly easy to read, because that's how I worked.
My classmate who learns aurally on the other hand often sat and doodled during class, but took every word in. She'd go home and study from books afterwards for the detail, but if she hadn't had the explanation during class, she didn't learn it as well.
Understanding how you learn and what works/doesn't work can help you really set up your learning environment so that it benefits you, which can make it more fun. I'm one very much for colour-coding and find new binders, schedules etc really exciting, but have a hard time maintaining the filing and organisation, so that's where I'll get distracted and not do so well, which makes it harder to study. I'm also more likely to work "away from discomfort" than "towards reward", so I find myself working like mad last minute to avoid missing deadlines rather than organising myself in advance to gain good grades...
But it's also important to remember to have some fun in there somewhere...just studying isn't any more healthy than not studying at all!