Stocks and shares and investments docs are here, but let me know if you get stuck and ill try and help out as I also track stocks
I dont know, about the language. Its written in Scheme and Guile. Id never heard of them until Gnucash. That said the built in reports and options are enough for what i want. A multiplot custom chart option would be useful but i just export to spreadsheet at that point and plot there
Been using gnucash for ≈7 years and havent found anything better. It has its quirks but once you get used to it its pretty straightforward and easy for the basics
I just wish reports were more customizable/ easier to create custom ones without learning a language i’ve never heard of before