BFT shotgun set up get together shoot

[ocean]

Hey Norm i got me a mossberg 12g .Got it at wallyworld for $179.I put the barrel in now i dont understand about the chokes .I read the manual but it seems like all japanese to me since i dont know what they are talking about.Its my first shotgun and i dont want to mess it up .It shoots the 2 3/4 inch and 3 inch .It came with 2 chokes .Where do they go and which one do i use? The manual is very confusing for someone new to shotguns!I bought 2 boxes of 2 3/4 shells to start out with. ANY HELP IS APPRECIATED!
[signature]