Is there an Apple Knowledge Base somewhere on www.apple.com or another official Apple site that houses a heavy-duty knowledge base similar to what Microsoft offers for its various products? If so, I have not been able to find it. The Microsoft knowledge bases offer up a gazillion pages of tech articles and fixes for problems encountered with its products. When I was a heavy duty windoze user, I found answers to my questions and problems about 90% of the time in the knowledge base. Does Apple offer anything like this?