Ask HN: Udemy recommendations? Many classes are only $10 today

I'm not a CS major (a college dropout actually). I only finished half a coding bootcamp before leaving (got my money back). I've worked as a technician, in support at a hosting company, as an intern at an agency, and as a front-end developer at a startup. I want to either work for a company I respect or create one that others respect.

topics I'm interested in:

WORDPRESS: - Developing my own WordPress themes and plugins

JAVASCRIPT: - A thorough introduction to Javascript-based development with Node.js, Express, React, Redux, Vue. A course that helps me build a few sample apps that I can improve over time. - I'd like to know what exactly many of the most used Javascript frameworks (Backbone, Modernize, Moment) are and when/where I could/should I use them.

DEVOPS: - Getting better with git and ssh, so I can be comfortable with running a Vultr or Digital Ocean set-up with Terminal - Managing my own VPS. I want to get to this stage eventually.

Thanks!