Is there a audiophile bible?

I am just getting back into the act here after 15 years of family raising. There is a whole lot of new stuff to absorb. Does any one know of a great source online or book that would go over the basics. For example - why when and how to clean connections? Do all CD players play SACD, does SACD sound better than CD over a two channel system? Are combo DVD and CD players too much of a compromise over separates? I am finding that nearly all reviews of any peice of equipment, cable etc says that the thing is terrific and worth three times as much as the price. Thats sure confusing!

I currently have an Aragon 8008BB amp, 28K preamp, and D2A2 DAC, a ten year old NAK MB1 player, Polk 2.3 Speakers, and Monster M1 interconnect. Thinking of changing speakers as the next upgrade but also wondering about a nice CD transport. Any system enhancement you woudd suggest, staying within the 3 K range at least for the first hit?