First, remove the bands of wooden pegs in the claws of your lobster. Twist off the claws.
Crack each claw with a nutcracker.
Separate the tail from the body. I would recommend holding the lobster with its' walking legs down and snap the tail off down towards your plate so that you won't give yourself (or your guests) a shower with the juice inside the lobster.
Twist and break the flippers of the tail.
With a fork (or your finger) push the tail meat out of the wide end of the shell.
Separate the body from the back of the lobster. Inside the body is where you will find the Tomalley (the green substance). *see note
Open the body section by cracking apart. The lobster meat inside sits in four pockets where the six small walking leg joints are attached to the body. It's a bit of work to get at but worth it. There is a good amount of meat hiding in there!
The walking legs contain meat as well. The best way to get at it is to either suck on the leg like a straw or to milk it out with your thumb and forefinger.
* IMPORTANT Pregnant women, nursing mothers and women who may become pregnant are advised NOT to eat the tomalley (liver of the lobster), as it is the lobsters' natural way of filtering out contaminants from its body. All others should limit their tomalley consumption to 1 meal a month.