Visual Basic is still the best. Winforms is much more intuitive than JavaFX. Teach them vba first so they can actually use programming for automating their lives before moving on to VB.Net. If possible, skip the OOP crap entirely and teach them to use modules instead. They only need to know the bare basics of OOP e.g. The concept of "self" etc. Teaching them the benefits of lambada early on would be very useful. Now if only clojure/Go had a better IDE and GUI designer...