My greatest tip is to always ask either my lecturers, tutors, and (if applicable) lab assistants -- no matter how late dilemmas are left. Of course, best ask them ASAP. I'm sure they can help you out alot more than we can
. Email them or somethin'
If you have mates that are going quite well, don't be shy to ask them for assistance too. At a time like this, I think the last thing you want right now is to suffer in silence and being strapped to a book or a set of lecture notes while in a quiet, isolated room.