you put pin headers in it to breadboard it and it pops right into the breadboard. you would then just use wires to go from the pin to somewhere else i.e. a sensor.
also you do not need a voltage regulator if you just use 5v from the FTDI cable or 5v from another source. Also check out the shield adapter on the site it lets you use any normal Arduino shield with that form factor something that no one else has for the alternate form factors and it has a voltage regulator and other power options on the board as well