Popular and useful websites to learn iOS/Swift/Objective C development

There are thousands of websites which writes tutorials about the iOS development. Some are paid and some are free. Among them here are some of my favourite that I learnt from. They provides free tutorials and also have paid tutorials on subscription. They are listed below:

you can add your favourite :)

1. www.developer.apple.com (official apple documentation website)

2. www.raywenderlich.com

3. www.appcoda.com

4. www.letsbuildthatapp.com

5. www.geekylemon.com

6. www.maniacdev.com

7. www.tutorialspoint.com

8. www.natashatherobot.com

9. www.useyourloaf.com

10. www.stackoverflow.com

11. www.github.com

12. www.coursera.com

13. www.udemy.com

14. www.lynda.com

15. www.treehouse.com

16 stanford.edu (video tutorials from standford university)