http://www.photo-geeks.com/dslr-digital-camera-lense-guide/ nikon and canon lens price comparison
Photography Cheat Sheet: what your camera captures at every lens' focal length
nikon and canon lens price comparison
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Canon vs Nikon: the in-depth (and jargon-free!) comparison you've been waiting for
Here is a side by side lens price comparison for Nikon & Canon. If you are doing some price shopping, this can help.
Canon & Nikon shooting modes: side-by-side comparison of each option on the top dial and explanation of what it does
What Kind of Camera Should you Take Travelling?