Hey fellow developers!
In this video, I tried to explain in details what an API is? How does it relate to web service? How does it relate to REST?
I also explain REST (REpresentational State Transfer). I explain how the concept relates to the WEB and to HTTP.
After that I talked about How RESTful APIs work with diagram and code. Finally, I give a short list of what you need to know to start building APIs.
I know the video is sort of long, but I think it is worth your time. I hope there was a video like this when I first wanted to learn about API and REST. And this is probably why I created it. I know the pain, and I don't want you to go through it. Enjoy! :)

My two favorite books about RESTful APIs:

RESTful API Design (API-University Series) - check the three book!

RESTful Web APIs: Services for a Changing World - by Leonard Richardson


Resources:

Roy Fielding's Dissertation. The REST Chapter:
https://www.ics.uci.edu/~fielding/pub...

Here is the link of the full dissertation:
https://www.ics.uci.edu/~fielding/pub...

The Other videos I mentioned are in the suggested videos area.