Books 24x7 is a virtual library of books available to all students at Sheridan. There is an entire library of IT books in all kinds of categories that are relevant to all the things you'll be studying! New books are added frequently (you can request an email of which books are added if you wish) so this is a great way to stay up-to-date without spending a fortune on textbooks. Be sure to use the Bookshelf feature: you can create "bookshelves" or categories and then add selected textbooks to bookshelves. You can also bookmark sections of textbooks and add notes.
Lynda.com is a collection of online course videos in a variety of subjects, including programming, networking, and web design/development. You can create play lists and view transcripts of videos.