Pick a colour, then click stickers on the cube. Set it to match your real scrambled cube, then press Done and Solve.
Each letter is a face: Up, Down, Left, Right, Front, Back. A plain letter = turn that face clockwise (as if you were looking straight at it). A prime (′) = counter-clockwise. A 2 = turn it twice. Lower-case x y z rotate the whole cube.
▶ One move goes at your pace — one turn per press, with arrows and words for each. ▶▶ Play step plays the rest slowly. Or turn the cube yourself — I re-read it after every move.