Start with 2020-part 1 and go in order through 2021. That helps you understand the later parts better because some of the basics are explained early on and built upon as it goes along.

2020- Part 1: Dell talks laptop fan design innovation.
https://youtu.be/9I12O1uXWh8
2020- Part 2: Is it OK for a laptop to run at 100 degrees?
https://youtu.be/u2--SmLORIE
2020- Part 3: Heat pipes vs thermal chambers in laptops, which is better?
https://youtu.be/NjTP0UlyrR0
2020- Part 4: Should you re-paste a laptop CPU? Is liquid metal better?
https://youtu.be/dRSQRqXZfgs
2020- Part 5: Will thin laptops ever perform as well as a thick laptop?
https://youtu.be/V80YvFge0DU
2020- Part 6: How does Dell design a laptop to stay cool?
https://youtu.be/TXI-JlYJ390
2021- Part 1: Alienware talks 4-fan cooling design.
https://youtu.be/CJCOEy-UcH8
2021- Part 2: Alienware explains element 31- A new thermal interface material.
https://youtu.be/yJmQbzYrXRU
2021- Part 3: Alienware discusses making thinner gaming laptops.
https://youtu.be/W52iS6oau_8