Coming to class and participating in class is very important. Make sure you do both of those two things. Coming to class and passively sitting does not help at all. You must BE in class in order to participate and learn. Class also provides a routine. You need to be working regularly on the material to really learn it. Setting up a system by which you are not trying to cram all the material in at the last minute will help. Class provides a great routine as it happens regularly at a scheduled time.