If you have any gaps between lectures/tuorials or whatever, lets say 1 hour, try to use this time for example to start doing assignment or at least do some planning, or read a book you always wanted to read but somehow never found time at home, just make a best use of this time, that's what I observed with myself, because I used to spend whole time either chatting or browsing web which weren't any effective...
I would be grateful for more andvice for "young" and inexperienced students ??