I agree with one of llivv's comments. Finding just where to read up on a topic to answer a specific question can be a daunting task. Google often gives too many options to review completely, and searching this forum, or FAQ's can turn up a lot of posts that only periferally touch on the topic. (This last bit may reflect more on my poor search skills rather than on the actual forum content.)
One of the best investments I ever made was to actually buy the Debian Bible, and Debian System. They are not perfect, but they are full of a lot of useful information. Just my two cents worth.
Joe