Note cards. Use 'em as flash cards. These were my saving grace in college. Make a note card for every bit of information. Going through them really isn't a pain, and if you've started early, you will be so comfortable with the materials that you won't break the proverbial test sweat. Just think to yourself: 20 minutes a day for each class with these note cards. Make new ones when new materials come up, and go through them one or two times. How many classes are you taking? Four, five? That's like two hours for each class with five minute breaks between. You may take a weekday to sit down and collect all the materials, but yeah, if your important tests are months away, then it won't be a problem.
Not to say, you won't have to do reading and other exercises and readings. What I'd suggest is get back from class and do the little daily things first-thing, fit your note card review in somewhere, and make the reading assignments a treat. Put on some chill, non-vocal music, sit in a comfy chair with an atmospheric lamp, pour yourself some tea, and read what you've been assigned before you go to bed. Keep some sticky notes or a highlighter around if you do well with note taking while reading.
The point of studying is that you do it every day. Catalogue and familiarize yourself with the material as it comes.
I skipped highschool, and school had been so easy for me before, even in the advanced classes, that I had no idea how to study when I first got to college. It really threw me for a loop. This is what I came up with after a few years for as low-stress as possible an experience. It may be different for you, seeing as I'm terrible at memorization but can read conceptual material once and give a good analysis of its content. (resulting in the very flash card-y, less emphasis on reading methods here)
I feel secure in recommending these methods as a good place to start feeling out your own study rhythm.
And good job taking initiative so early!
