What resources to learn Ruby On Rails?

yes, I like gifs 😂

Here you can put the best resources you would recommend to someone who wants to learn Ruby on Rails or improve his skills 😃

I will add them below :

Start with Ruby on Rails:

Free :

To go further:

Free :

Thanks to :

@vinistock, @miah, @edisonywh, @rhymes, @maxtrelle, @redfred7, @ixeres, @mattheefor