Thank you for the suggestions on frameworks. I will definitely start learning the ones you suggested. As far as the open-source technologies go, should I look into learning them as an enterprise developer or are there commercial technologies I should focus on? Or are those also frameworks that would supplement your original suggestions.

I have begun learning a new language (Python, Ruby, and Javascript have been my main focuses, as well as dabbing in PHP in case I needed to know it for web development)

Again, thank you for your suggestions. This list of technologies has given me a great point at which to begin.