Accent patterns

Hello, I need some help with accent patterns.

I've heard that there is a pattern of stress which depends on the declension class of nouns. Unfortunately I can't find a good website that will explain it properly.

If you know about this please explain it to me or if you know a good site which explains it fully please tell me the address. Another thing, does anyone know a good on-line dictionary which that shows stress?

I appreciate any help :)

This dictionary shows all the forms of a word and where to place the stress.
http://russian.dmll.cornell.edu/rdt/

As far as I know there aren't any REAL accent rules to Russian, like where the accent will typically go.

This is a good on-line dictionary and you can scroll to find your words fast. :D
Орфографический словарь