B&H Photo started an online resource named Canon Lens Experience, a site dedicated to an exhaustive look at various Canon lenses.
Features of the lenses are presented in an interactive way. There is also a series of interviews with 15 well-known photographers about how to take pictures in different settings (and what gear they are using).
The Canon Lens Experience from B&H is a premium content project that features detailed articles about fifteen professional photographers—who all share a love for Canon glass.
There is much more, and this is a very useful tool and resource to learn more about your Canon gear, and about the best way to use it.