Check out the Brew Strong episode on filtering
. The rest of the Brew Strong shows are full of great info.
I use The Jamil Show
when I'm brewing a new style. Go back through the archives to get past the "Can You Brew It" episodes. They cover every style in the BJCP Guidelines.
Non CO2 ways to dispense? Are you looking for beer gas/nitrogen? The only ways I know are CO2, air (keg will go bad quickly), gravity dispensing with the head space replaced by air (like a cask - beer will go bad quickly), and beer gas.