do not know where to learn Ruby on Rails

Hey Ahmed,

To learn about creating Users in Rails this site is great. It walks you through the process and you'll learn quite a bit. https://www.railstutorial.org/book/modeling_users

Another great free resource is the Odinproject: https://www.theodinproject.com/ They pretty much cover everything.

Otherwise I recommend creating your own project to help learn and google questions as they come up. Such as with Layouts I found a good RailsGuides article about creating and using them. http://guides.rubyonrails.org/layouts_and_rendering.html

Unfortunately those topics have been removed from the track and are now only available as Pro courses. You should be able to google for Ruby on Rails tutorials or specific topics like Rails User Authentication and find some good information. Another good source I've found is Kindle Unlimited which is a monthly fee service that gets you access to a number of books on Rails for 'free'. And of course, YouTube, for talks and lectures on various Rails topics.

My favorite site for Rails lessons is Daniel Kehoe's Github page: http://railsapps.github.io/

Hiya there! Apart from what @BryanReed and Brandon McClelland have told you , i think you should try (RailsCasts)[http://railscasts.com/] by Ryan Bates. Every Ruby-on-Rails dev pretty much watch RailsCasts when you need to learn about Rails concepts and additional stuff. And now regarding Authentication system, You must learn Devise , or you could even go for something lightweight like Clearance or AuthLogic or Pundit or even your own Authentication system from scratch. Refer to official GitHub projects of these Authentication systems and they have pretty good documentation over there and even example and tutorials. or you can just search these gems on RailsCasts.

There are unlimited resources on internet when it comes RoR, all you have to do is do a little research. And as far javascript goes, i'd say take your time and learn JS as well, especially Angular ad React. Create some projects of your own. And refer to awesome Ruby-on-Rails official guides page for literally everything.

~ Ari