Great, free tutorial app

I have been trying to learn coding in swift for months. I searched and searched, but I couldnt find a free tutorial with ample examples and step by step instructions. This app changed that. Although this app will pester you to pay for a nano degree program, they have multitudes of free courses on all sorts of subject matter. With this app, I can finally teach myself how to code... For free

jbcd13 about Udacity