Center 2: last bar
Step 1 / 3
r: Right inner layer: turn 90°, front face goes up (Written as TR in the textbook)
The white center is done on the bottom. The top is missing its left column; the front has a yellow bar of three in its right column.
As for center 1. The final r' puts the right column back, so the white center stays put.
Step 1 of 3: r. Right inner layer: turn 90°, front face goes up