Where can I find all of Apple's Technical Q&A's and Technical Notes?

I discovered this:

http://developer.apple.com/iphone/library/qa/qa2010/qa1686.html

Since this was incredible useful for me and never found anywhere else, I wonder which other top secret informations are available in such "hidden" answer-documents?!

I wasn't able to find the root directory that lists all of them. Is there a way to browse all those frequently asked questions and answers, or is it a matter of great luck to stumble upon one of these?

What is Apple's Geek Squad called?

Make a Genius Bar reservation at your favorite Apple Store and get help from an Apple expert.

How can I chat with Apple support?

How to Chat with Apple's Customer Support. To chat with the Apple customer support team, go to getsupport.apple.com. Then choose which Apple product or service you need help with and what issue you're experiencing. Finally, select Chat and sign in with your Apple ID or enter your product's serial number.

Links to Technical Q&As and Technical Notes can be found on the left bar in the iOS Reference Library Page...