Step 2: Solve Second Layer

Move 1 shifts an edge piece from the bottom-middle to the middle-left of the front side. Though it's not fast, you can solve the second layer using this move only. Watch a longer demo.

Look for an unsolved 2nd layer edge piece in the bottom layer. If you find one, turn the bottom to align the edge piece with a center, making a T on one of the side faces. There are 3 possible cases.

Case 1	When the color on the bottom of the T matches the side to the left, do move 1 with the T in front to solve the piece.
Case 2	When the color on the bottom of the T matches the side to the right, do move 1 with the T on the left to flip the piece. (When you are ready to get a little more advanced, use this alternate move to solve the piece.)
Case 3	When there are no solvable pieces on the bottom, do move 1 with an unsolved piece in the front-middle-left position (like the red-green piece shown to right) to move the piece to the bottom.