HTTP Requests Courses

Using the Firefox DevTools to Debug fetch() on GitHub
Mozilla Hacks via YouTube

How to Make AJAX Requests With Raw JavaScript
Envato Tuts+ via YouTube

Appsec TLDR
YouTube

Django Views - Django Tutorial
Extern Code via YouTube

Learn Flask in 20 Minutes - Python Web Development
Caleb Curry via YouTube

How to Call a REST API in Java - Simple Tutorial
Coding with John via YouTube

Mock REST and GraphQL APIs with Mock Service Worker
egghead.io

REST Assured Fundamentals
Pluralsight

AWS Cloud Development Kit (Indonesian)
Amazon Web Services via AWS Skill Builder

Async/Await and Fetch API in JavaScript - Tutorial 76
CodeWithHarry via YouTube