This guide obviously only deals with Boss pedals... but every pedal follows the same basic concepts. The settings will be relatively the same for any pedal that you get... I recommend Boss pedals to anyone looking to buy them... if you're curious about tone. Check out the Guitar Effects Guidebook that you can download at the link at the bottom of this page...
There's a !!!TON!!! of good info on here about tone. I think it will be very helpful in the future when people come to the site and ask questions about effects pedals and settings on effects pedals... Anyway... Check it.
http://www.bosscorp.co.jp/products/en/GT-8/brochures.html