Here are a few helpful links to documentaion, videos, and tutorials to help you get started with rendering in Unreal Engine 4.

DOCUMENTATION:
Lighting
Materials
Particles
Post Process Effects

TUTORIALS:
Videos
Wiki Tutorials

BLOG POSTS:


TWITCH STREAMS:

If there is some specific information related to rendering that you feel is missing from our documentation or tutorials, please let us know by creating a post in the Feedback section. Thanks!