My first bosses advice was "Write code like it will be maintained by a psychopath that knows where you live"

I have an old Prusa, it's paid for itself many times over. Check out Tinkercad | From mind to design in minutes[^] for a very easy way to design stuff. You will have teething problems but stick with it and try to fix one problem at a time. Don't use super cheap filament it nearly always causes problems and level your bed before each print. Have fun!