the best idea for someone in your position (as is EVERYONE's position at the start of anything new in medschool) is to start off by going to class. After a while, you may realize...."damn, this lecturer sucks" or "it'd sure be nice to be drooling on my pillow right now". Really the key point is to personalize your day to how YOU think will suite you the best and you can really only find this out by experimenting. In the end, I ended up skipping most classes, but there were a few lecturers that I really liked and thus I went to them. Like I said, don't worry about what others do. If you realize that you can learn anatomy better at home with a nice cup of coffee in your PJ's, then do it.
Another thing that I suggest to you, which is easier said than done, is to try not and get discouraged when talking to others. Once you have a study plan and you hear someone say "oh yeah, i spent 8 hours studying yesterday STRAIGHT and then I read 3 Nature articles about the subject because it was sighted in last years syllabus" try not to get freaked out. Sure, its bound to happen and its only natural to feel like a sub-par ***** when talking to others about their crazy systems....But honestly, when you find out that your system works for you, then stick to it CONFIDENTLY but be aware that you will always need to adapt. As a previous poster stated above, you'll be fine....just get stoked about the next chapter of your life and not get stressed about the challenges that await for there will be plenty of time for that .