I've been collecting eBooks from PackT publishing, and the latest free book is Scientific Computing with Python 3. They have a daily free book, and several of them are Python related, that's what stimulated my interest. If you want today's free book you've only got 7 hours to grab it, but they do cycle through the list, so it will turn up again. If you download it, don't forget to get the code file as well.
https://www.packtpub.com/packt/offers/free-learningGreat free books list, i take some about JS and node.
Python is a powerful tool, but i think JavaScript is better because is focused to online projects. At end it depends on the application that software will have, if you want to make an android app you'll need to learn other language than python or JS. and if you want to build a game maybe you will go with C based engines.