As stated by drdel:
Ring:
The rings are mentioned as 1R (innermost), 2R (next ring from innermost, 3R (middlemost ring), 4R (second from outermost) and OR (outer ring).
Note that OR has the extra space to park a ball.
The step by step stated the positions like a clock - 12 o'clock, 3, o'clock, 6 o clock and 9 o'clock.
When you are told to L click and R click the mouse - it will move the rings clockwise or counterclockwise.
You can do the clicks anywhere on the STATED ring and the SPECIFIED number of times and CORRECT left or right click. This will turn it correctly. Then you will do the procedure for the balls in the stated clock position.
For example: R mouse click 1R. At 3 o’clock position move all the balls towards the center
Right click anywhere on the innermost ring/center. It should turn once.
Then click on the balls that are at 3 o'clock position so that they move to the center. Since there should be an empty space at center now, you can move the balls that are innermost to outermost.
Do this step by step slowly and follow each step (maybe cross it off so that you won't skip a step).