The second step to solving a Rubik's Cube is to get in the corner pieces on the bottom white face.
You want to have the white piece of the corner piece on one of the side faces. I you have the corner piece incorrectly placed on the bottom, then perform the algorithm Li, Ti, L to lift the corner piece from the bottom or R, T, Ri whichever side you are on. If you have the white face on the top, then perform either of the algorithms Li, T, L or R, Ti, Ri.
Once you have the white face on one of the side faces, then you have to have the other color going diagonally from the center. Once you do so, perform the algorithm Li, Ti, L or R, T, Ri.
Follow these steps and you will have in the full white bottom face and be one step closer to impressing your friends.