1. Have some content available on your cell phone for those moments where you can't really have a heavy textbook out, but you find yourself having nothing to do: i.e. on the bus, waiting on line at the bank, grabbing a bite on your break from work, or even when you're on the can!
2. Do NCLEX-style practice questions! Do them often! Do them religiously!
3. Make concept maps. They will help you remember the connections between meds/concepts/symptoms/etc.