Studying and learning are the part of engineering culture. To learn and to keep learning is a difficult task. One of the few difficult factor of engineering is the abundance of topics. And you have to go through them in such a short time period.
Internet in a free resource for most of us to learn and keep learning. There are a few of the eminent educationalist who have easen the path for us.
How to study by Bill J Rapaport
Bill J Rappaport is professor emeritus of computer science at University of Chicago at Buffalo. He has written a very well detailed and explained article on how to study engineering or any masters degree.
Dr. Richard M. Felder is the Hoechst Celanese Professor Emeritus of Chemical Engineering at North Carolina State University. He advices students related to note taking, doubt clearing and other less known, but very important facts.
Surviving Engineering by Dr. Richard M. Felder