Chapter 8. Contexts and Dependency Injection (CDI) of the Development Guide has a couple of small issues:

• Subchapter 8.1.2. Relationship Between Weld, Seam 2, and JavaServer Faces refers to RichFaces, which I think were discontinued. RichFaces were supported for use with EAP 6, but I think they are not for EAP 7.
• Subchapter 8.2.1. Enable CDI speaks about manually changing XML files. That's discouraged, we try to steer people towards using management CLI.

CC tremes1@redhat.com as someone who understands the topic much better than me