webdev

Front-End Web Development with React – Programmer Prodigy
Continuous Integration: Tools
Become a RESTful API Developer – Learning Path

I know lots about lots of this, but also have some gaps that I bet a systematic approach would fill.
calzoneman/sync: Node.JS Server and JavaScript/HTML Client for synchronizing online media
Open Source Virtual Background | BenTheElder
Video Chat SDK – Agora.io
Virtual Background For Video Conferencing To Improve Privacy and Add Fun
Setting up Trusted SSL Certificates for Local Development, Using mkcert on Ubuntu 18.04 with Apache. – Jonathan Bossenger
SmartyStreets US Autocomplete Pro – JSFiddle – Code Playground

I’m working with the SmartyStreets autocomplete API and this fiddle has proved very useful.
Mockbin by Kong

This is a cool service that lets you test what your request looks like when an API receives it. Super handy for debugging issues.