3X3 BEGINNER TUTORIAL
In this step, we will move the four corner pieces with white stickers down to their proper place in the bottom layer. There is a short algorithm that helps us do this: (RUR') and its mirror (L'U'L).
Identify a corner in the top layer with a white sticker, preferably one with the white sticker on the side rather than on the very top of the cube.
Corner on Top, White Sticker on Side
If the white sticker is on the side, turn the top to align the other side color with its center (e.g. red with red), then face that side color.


Corner on Top, White Sticker on Top
If the white sticker is on the very top of the cube, turn the top until the white corner is over an empty slot (that is, over a bottom-layer corner that is not yet solved).


Corner on Bottom
Sometimes there will be no white corners in the top layer, but the bottom layer is not solved. When this happens, turn the cube so that an incorrect white corner is on the bottom front, preferably with the white sticker facing sideways. (This avoids creating a top-facing white sticker.) If the incorrect white sticker is facing down, then it doesn’t matter if it is on the bottom front left or bottom front right.


After all corners are placed correctly around the white cross, the first layer will be complete. Next we will solve the second layer.
