using a crockpot is the easiest way. take beef brisket (around 2 pounds for 4 servings) and submerge in liquid in the crockpot. either use beef stock, seasoned water, or my favorite- beer. cook on low for 8-9 hours. remove the brisket from the crockpot and put on a cutting board. take two forks-using one to hold the brisket down, the other to pull at the brisket. work along the striations in the beer, and you should get pulled or shredded beef. put the now pulled beef into a bowl and ladle some of the cooking juices onto the beef to keep it moist. if you want to add hot sauce or bbq sauce at this time you can.
before adding to the crockpot, make sure to trim some of the larger fat junks off of the brisket. makes for pulling the beef later much easier.