Sometimes the most mentioned doesn't mean "must read" book. Take a look at http://dev-books.com/ in your spare time.
If you want to dive into some programming language or some new fancy framework written in it, just google for "awesome <langnamehere>". There are a lot of curated git-hub repos like https://github.com/markets/awesome-ruby
GitHub
GitHub - markets/awesome-ruby: 💎 A collection of awesome Ruby libraries, tools, frameworks and software
💎 A collection of awesome Ruby libraries, tools, frameworks and software - markets/awesome-ruby
Don't know what tools to use with it? Take a look at https://www.libhunt.com/
Libhunt
LibHunt - Trending open-source projects and their alternatives
In fact, You should learn some Lisp https://www.youtube.com/watch?v=3T00X_sNg4Q