I want a complete reference book for Ruby programming.

Question

2 and above

Answer 1

https://www.sololearn.com/discuss/608062/?ref=app
https://www.sololearn.com/discuss/636195/?ref=app

Answer 2

https://www.sanfoundry.com/best-reference-books-ruby-programming/

https://whatpixel.com/best-ruby-books/

Have a look to sanfoundry for best results :)

Answer 3

Check out
Goalkicker.com