https://www.manning.com/books/the-well-grounded-rubyist-fourth-edition
The Well-Grounded Rubyist, Fourth Edition - David A Black and Joseph Leo III
well grounded rubyistfourth
https://www.manning.com/books/the-well-grounded-rubyist-third-edition
The Well-Grounded Rubyist, Third Edition - David A. Black, Joseph Leo III
From beginner to master, learn Ruby inside and out with this definitive guide.
well grounded rubyistthird