Beginner JavaScript API's

Question

What are some JavaScript API's that would be perfect for people that are just getting a grasp on using API's?

Answer 1

https://blog.cloudrail.com/api-tutorial-for-beginners/

Answer 2

Thanks for the info Vukan!

I have worked with Google Maps, Gify and Weather API's etc.
But are there any API's that are a little more advanced than the ones mentioned above?