The below are a few useful articles related to programming on RISC OS computers, this is by no means complete but is a good start if you’re looking to start coding on your RISC OS box.

Python – A widely used high-level programming language for general-purpose programming, created by Guido van Rossum and first released in 1991

PHP – A server-side scripting language designed primarily for web development but also used as a general-purpose programming language