You can stop there if you only want to learn basic web design. If you want to make web-apps and stuff, these are highly recommended:
- Ruby
- Sass (think of this as super-powered CSS)
- CoffeeScript (think of this as super-powered and better-looking JavaScript)
- Haml (think of this as better-looking HTML for Ruby on Rails apps)
- Node
- Jade (Jade is basically Haml for Node instead of Ruby)
- jQuery (basically required for a job involving JavaScript)
- Ruby on Rails (requires knowledge of Ruby)
- AngularJS
- Git (or another source code management thing)
- Markdown (this page was actually written in Markdown!)
- Shell/bash/unix commands (easy as fuck)
- Python
- C (just to understand computers at a lower level)
- Ruby
- Ruby
- Ruby on Rails (not an actual language but very helpful to know)
- Objective-C
- Swift