I was a coding noob when I started, so I have some unfashionable languages/environments. Self taught using SQF (lol Arma 3) and also some experience with micro controller scripts from previous video game hacking efforts. It's all in thinkScript and VBA Excel DDE socketbridge API (java). That said, I'm very happy with the results. Porting the stuff over to a fashionable or more powerful/modern environment is a priority, but I'm kinda not good enough at programming (or just not motivated enough) to get started. It's actually a lot of work! (I'm a mathematician, not a programmer) These are some basic tools I would port over... It's just simple volume analysis, with a trend analysis component (price predictor vs price differential). My tools on the VBA side are focused on the stuff that's harder to chart, like basis spreads and complex summations/derivations of price attribute infos.
When you plot charts with indicators using whatever language, you use one of the plot libraries (ggplot, jfreechart, plotly) right? How do you plot the indicators?
Let me know via PM what you are trying to build. Maybe we can have fun with something you can actually use.