How much thermal paste should I use?

Too little, too much? how do you tell? Here's a quick guide on how much thermal paste to use, how to use it, and why it's necessary.

Best thermal paste? (Or

Did I apply too much thermal paste? Watching video's now it seems others apply far less - CPUs, Motherboards, and Memory - Linus Tech Tips

Is thermal paste supposed to cover the whole CPU, or is it fine if it covers around 50%+ in a circle/oval fashion in the middle of the CPU? - Quora

How does too much thermal paste effect thermals? — Micro Center

Did I apply my thermal paste right? I'm having so many issues with my new build. : r/computers

This enough thermal paste? : r/computers

BEGINNERS GUIDE: How To Apply CPU Thermal Paste

For What Length of Time Does Thermal Paste Dry?, by Guides Arena

What is the Best Way to Apply Thermal Pastes? - NabCooling

Best Way to Apply Thermal Paste? Does it Even Matter?

How to Apply Thermal Paste to Your CPU

Too much thermal paste, [H]ard