In the wide area of internet marketing there are too many people trying to sell things that are good enough at SEO that most Google searches don't get me useful information. I seem to get answers in the dp forums as long as I ask a concise question. Is there anything anybody uses for reference besides asking in a forum? I'm a systems administrator during the day and any Google search gets me reference information on the nitty gritty details of my job. There are also plenty of books in the book store with far more detail on any aspect than one ever wants to know. I'm sure everybody has noticed the same issue getting detailed information on specific details in our industry. What do you use when you want to look something up?
While not always %100 accurate, I find Wikipedia to be a useful resource. The ebusiness Directory from WebProNews might even prove helpful for you. There's a lot of good resources in there.