Recommended · for some experience
EEVblog #744 - SMD Thermal Heatsink Design - µSupply Part 15
Why people recommend it
Dave Jones on getting heat out of surface mount parts through the board, recommended for understanding thermal resistance and the electrical analogy for heat flow.
Watch for: Pairs well with a thermal resistance calculation
In their words
This link contains useful information, also this video.
bobflux on electronics.stackexchange.com, Jul 2019. CC BY-SA.