The first set is called Post Iso and uses the 1-4 High set up. The 3 runs around the 5 at the right elbow, cuts back out to the right wing, and receives a pass from the 1. The 1 cuts through the paint to the left corner. The 4 cuts to the top while the 5 picks for the 3. The 3 dribbles around the pick, and passes to the 4 up top. The 5 rolls off his screen to the hoop and should get a pass down low. He should have an easy shot or a one-on-one situation in the post.
The next set is called Double Down Screen. This uses the box set up with the 2 and 3 starting on the right and left blocks, and the 5 and 4 on the right and left elbows. First, the 5 pops out to the right wing and gets a pass from the 1. Then the 4 cuts up top to pick for the 1, who cuts over to the left wing. The 4 gets the ball from the 5, and the 3 cuts to the right wing and picks for the 5, who cuts down across the paint to the left block. The 4 swings the ball over to the 1. Then the 4 and 3 run down to the right block to set a double screen for the 2, who cuts up top to the three point line. The 1 can pass it over to him for an open 3 or send the ball down to the 5 in the low post.
The third set is called Iso-4. The 2 and 3 start on the right and left blocks with the 4 and 5 starting just in front of them. The 3 cuts up to the left wing, and the 1 dribbles over and gives him a pass. Then the 4 cuts up to the right elbow, and the 2 cuts across to the left corner. The 3 passes the ball over to the 4 who can take it himself or pass to the 5 down low.