Anybody here with coaching / managerial experience to share some input on football strategies & tactics?

I once had a glance thru Jose Mourinho's biography at the bookstore some months back, and was very interested when he talked about strategies during games. About how an opposition manager once sent in a speedy winger during a game, and JM countered by doing the same, so that the winger would have to track back and defend the same flanks, thus reducing his effectiveness!

I'd like to learn how different formations can effect the play of a team, 4-4-2 vs 4-5-1? Why and when do teams use them? How does it change depending on the type of players that a team has? How do coaches even know what to employ?

I'm very interested in learning the finer points of the game, which I believe will help us look at football differently rather than just paying attention to scoring goals. Then, we'd have more appreciation of the game, even if it ends 0-0!