How does serverless computing work?

Hello All, I am a backend developer and I want to know about the working cycle of serverless computing, how does it work? Can anyone suggest me any best tutorial where I can learn serverless computing?

I have found one listing based site which provide best serverless tutorials. Can anyone check this and suggest me which one is better tutorial?

How about the free course created by myself? https://www.serverless.com/learn/courses/full-stack-application-development-on-aws/