hi ben,
when i first started shooting many years ago with shotguns i got myself a 20g,it was nice and light to carry around and didnt have as much recoil as a 12g,just to experience what they were like and get a feel for them,after a while i felt quite comfortable using my 20g which lead me to get a 12g and thats were i have stayed,i now have 2 side by sides 12g ,and 2 semi autos,12g,
do you know anyone that shoots shotguns that you could tag along with to try there gun and get some experience?
also go the the gun shop an get a feel for the ones that fit and suit you, ie: under/over, side b