I just finished my 1L and I did well. My main priority was to pay attention in class and take great notes. That being said, on average I dedicated most evenings to reading/doing assignments (at least 8pm-12am) and weekends from mid-morning to evening. First semester is very busy...you need to hit the ground running. In terms of readings I was definitely selective, you have to manage your time effectively. There are a lot of writing assignments and they will take time because legal writing is an adjustment from any undergrad. In terms of exams, if you have great class notes backed up by some textbook notes from the start of the year, April finals and December exams will be a lot less stressful!