[mmstan]

Try some MOOCs. There's "Python for everybody" specialization on Coursera, it's newbie-friendly but you get to build a little product that does something. IMO, that should be your first milestone - build something small that works and see how you feel about that. If you find it interesting, you can go for more courses and after some time you'll know where to go next, but if you're not really amused maybe you should give something else a try.