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Looks like a good start. Have a feeling requiring registration to read articles will turn people off; there are way too many webmaster resource sites that provide similar information without requiring registration.
On the Tools & Info page, Miscellaneous is spelled wrong.
For some reason, the Who's Online block shows how many people are online, but says 0 for whatever page/module that's being visited. And the pop up window shows tells me that I'm in one module when I was actually in another. Do you have cache set on the block?
Beyond that, I don't see much wrong with it. The articles thing is pretty big, especially since it's the home page module.
