European Rail Travel - Barcelona Railways/Metros

I'll be in BCN for a couple of days what would you recommend be the easiest way to travel around the city and get to and from the airport without making for an arm and leg. @:-)

Which terminal are you flying into? Which part of the city are you staying? Check out TMB's site (http://www.tmb.cat/en/home) [which seems to be down at the moment].

Thank you for the very good link.. sorted! It worked. :)