Does anyone know of a good tutorial for getting starting with Tcl/Tk that still makes sense in 2024? I'm really intrigued by the idea of building and shipping simple, cross-platform GUIs, but I'm completely overwhelmed by all of the installation and configuration options. It seems like tclkit is supposed to be the go-tool tool for self-contained executables, but I honestly can't even figure out which site is the source-of-truth for downloading it, let alone installing it.