Answer 1

Yes! It is not just an app. It's a community!
You can ask any question on here (as long as it's related to programming)

Sololearn is one of the apps that does effort to keep it free, but also very useful at the same time.
They have Challenges where you can even learn MORE and if you don't know the answer to it you can see the answer once the challenge is over.

You can learn more than 6 languages on Sololearn and if you want to continue studying you can use Google but hop on at anytime to ask a question