online and print magazines: Car & Driver, Motor Trend, Road & Track, Consumer Reports, Buying Cars For Dummies
weekly or monthly automotive publications
local newspapers (pay close attention to the price and fine print - is this the actual price or payment?)
the various Black/Blue books used by dealers/banks
Carfax.ca
CarEdge.com
The Lemon Aide Car Guide
In addition to these, the links below provide a wide array of resources related to buying and selling a vehicle.