http://www.javaranch.com/ is one of the oldest Java resources on the internet. It has a dedicated Java EE / EJB section (with CDI / JSF 2 contents). Forums are also a great place to start the morning :-).
Web Apps, SPA, PWA with vanilla Java Script (ES 6+), CSS 3 and WebStandards only. As simple as possible, but not simpler. See you at: (Progressive) Web apps, Single Page Apps and WebStandards airhacks workshops at MUC airport, Winter Edition
airhacks.fm the podcast:
Stay in touch: airhacks.news.