Advice

I think Woody Allen said that 80% of life is showing up, so go to class.

And if you have a Mac, I would suggest doing as much work as you can on the library computers (or on any PC) with Windows, just to make things simpler.  

Finally, consider yourself technologically semi-illiterate.  Once you cut through your computer-ego about what you know, need to know, etc., actually learning new or better ways of doing things will be a lot easier.