Resources

Processing

Books

Data Visualization books
Visualizing Data by Ben Fry, available through Ryerson Library's Safari subscription (requires login)
Visual Thinking for Design by Colin Fare
The Visual Display of Quantitative Information by Edward Tufte

Processing books
Learning Processing by Daniel Shiffman
Processing Handbook by Casey Reas, Ben Fry (you can read the first 100 pages on the Google Books preview. This covers most of the basics)