Here's some links to other videos. It's worth watching several videos.

https://youtu.be/8rn0BqMyXBM

https://youtu.be/1Uw3o00Chi0

https://youtu.be/rjF5jabXRCY


I think the pea method is most commonly advised method to use but there are good points about using the best method based on the particular type of compound.

There are some points several agree on:
1. If you're using metallic based compound, be neat and keep it off the mobo. I've seen some applications where it nearly ran into the socket.
2. It depends on the type of compound. Read the manufactures application instructions. The pea method is the most common, but double check the instructions.