Bottom layer: Orient Corners

Hold your Rubik’s Cube so the UP (U) face matches one of the images below.
If one corner piece is YELLOW:

If no corner pieces are YELLOW:

If two corner pieces are YELLOW:

Action 1
Follow this algorithm.

Notice the RIGHT (R) face turns in opposite directions every other time and the UP (U) face always turns clockwise.

Action 2
If you do not have all yellow tiles on the UP (U) face you will need to REMATCH and follow the algorithm. (You may need to do this multiple times.)