I have some ideas of how it works but i would like a nice long explanation of it. i would like examples and explanations on how the examples work as well. show me what you got people.
Wikipedia has a pretty good explanation of what it is. I'm not sure if the Music Theory FAQ covers it or not.
start with any note you want and find the fifth of it. then find the fifth of that note. then find the fifth of that note. repeat this enough times and you'll eventually get back to the note you started on.
Its something that I have always found little benefit from. Its an interesting hmmm sort of observation, be it 5ths or 4ths, to me, its just a cycling of the same interval and it can be useful for modulating keys.