You can install an open source text editor like Sublime. COPY and paste code from a website into it and edit it in preview mode so you can visual see what your modifying. I taught myself 18 years ago by downloading a pirated copy of Dreamweaver and pasting my Eblogger theme files in it to customize my theme. Dreamweaver supports all languages. I would teach my kids using Scratch.
Was wondering the same. Also saw several lights moving super fast in comparison to the planes that were landing. Hard to tell if they're glares from the traffic lights being reflected.