I go to a school that is a laptop university, basically you lease a laptop for two years, give it back and get a brand new one at the end of two years.
One of the things that I have discovered is that if you bring your computer to class, even for the purpose of taking notes, you will more often than not end up distracted from the class. My first year I didn't do so hot because of this. I would attend classes and sit on my laptop doing nothing, then come homework and tests, I wouldn't know what was goin on and would be behind.
I stopped bringing my laptop to class, went oldschool with notebooks and assignment notebooks instead of taking notes in word. This past semester I got a 4.0 and earned a scholarship equal to Instate tuition because of it.
In my experience gettin off facebook and partying less will help you ou the most. Also what was said about adapting is completely true. I took two English classes for gen eds last year during the same semester and each professor had a different way of writing for each class.