when the notes are uploaded depends on the subjects you're doing.
for most sciences, they're uploaded before the lecture (though depending on the lecturer this can be between the morning of, and two days prior).
personally, i'd recommend printing them at home. otherwise, if you do pharmacy, you can use the honours/post grad students room for free (and hope you dont get caught
) or IT students get free printing. the libraries are generally relatively decent with their pricing but you have to load money onto your student card first which can sometimes take a little while.
it's also easiest to print in black/white and print several slides to a page, and double sided to save paper