STEP 0 · WARM-UPOne letter.
One letter.
One turn.
Tap a letter. The cube keeps replaying that move until you pick another.
The letter names the face.
The mark sets the direction.
Always look straight at the face you turn.
Imagine that face is turned towards you, like a clock face. A letter on its own: turn it clockwise. Add ′: turn it the other way. Add 2: turn it twice.
R
Look at the right face from the right, as if it were a clock face, then turn it clockwise.
You can read it. Now solve it.
Step 1: the white cross.