Thanks for posting that. Where would a PHP programmer go to get a foothold in Scala web development?
We began working with Scala very slowly, only using it for small internal projects until we were more familiar with the language and stack.
We also avoided heading too deep into category theory territory in the beginning. Libraries like Cats and Scalaz are not allowed (currently).
I'd recommend the book 'Scala for the Impatient', tutorials and projects from Twitter, and Maven or SBT template projects.