Go to your public library and look for "XSi", odds are you'll find something. Good luck managing with the boredom of reading through it though, it's best to simply read through reviews online with lots of pictures (cough, dpreview.com).
After you actually make the purchase, go ahead and purchase the following:
1) [ame=http://www.amazon.com/Scott-Kelbys-Digital-Photography-Volumes/dp/0321604032/ref=pd_bbs_sr_4?ie=UTF8&s=books&qid=1236555098&sr=8-4]Amazon.com: Scott Kelby's Digital Photography Boxed Set, Volumes 1 and 2 (Includes The Digital Photography Book Volume 1 and The Digital Photography Book Volume 2): Scott Kelby: Books[/ame]
and
2) [ame=http://www.amazon.com/Camera-Ansel-Adams-Photography-Book/dp/0821221841/ref=sr_1_2?ie=UTF8&s=books&qid=1236555118&sr=1-2]Amazon.com: The Camera (Ansel Adams Photography, Book 1): Ansel Adams, Robert Baker: Books[/ame]
[ame=http://www.amazon.com/Negative-Ansel-Adams-Photography-Book/dp/0821221868/ref=sr_1_4?ie=UTF8&s=books&qid=1236555118&sr=1-4]Amazon.com: The Negative (Ansel Adams Photography, Book 2): Ansel Adams, Robert Baker: Books[/ame]
[ame=http://www.amazon.com/Print-Ansel-Adams-Photography-Book/dp/0821221876/ref=sr_1_3?ie=UTF8&s=books&qid=1236555118&sr=1-3]Amazon.com: The Print (Ansel Adams Photography, Book 3): Ansel Adams, Robert Baker: Books[/ame]
Most of what's in #2 applies to film, but most of what you could do to film in a darkroom with optical printing can be done to digital images in photoshop, thus helping you with digital post-production.