Here’s some books that can help you get ramped up into the functional programming paradigm Introducing functional programming with Underscore.js by Michael Fogus. And for a more in depth look into functional patterns Professor Frisby’s Mostly Adequate Guide to Functional Programming.
Some additional resources of people that have come to embrace the functional programming concepts:
Richard Feldman found writing in Elm made refactoring easier, improved productivity, and code quality.
Jon Nyman is full stack web developer who is passionate about the functional paradigm of programming. He programmed in Node.js for about 8 months and now spends most of his time writing C#, F#, and T-SQL.