One book I always recommend to the first year students (most of whom find drawing mystifying) is “Drawing on the right side of the brain” by Betty Edwards. This is NOT a how to for designers but rather a book that shows the reader how to “really see” through drawing. You can probably find the book in your local library.
http://drawright.com/theory.htm – This gives the background and theory from the book
Also, I second Susannah’s comment. Learn Adobe CS if you haven’t already. You’ll be happy you did.
Best of luck!