How to solve a Rubik's cube - Step 2

In the beginning of this stage you should have upper cross.

In the end of this stage You should have a fully created up face.

Find one of the corner cubes of the up face and locate it on the down face. Now, depending on the location of the cube colors, carry out the operation shown below.

Variant 1

Variant 2

Variant 3

Repeat the operation with three remained corner pieces of the upper cross.