Architecture introduction
Overall architecture (not component-specific)
Installing the near-RT RIC
For Cherry release (Jun-21-2020) Getting Started → Near Realtime RIC Installation
Generally the latest instructions: https://docs.o-ran-sc.org/projects/o-ran-sc-ric-plt-ric-dep/en/latest/
List of cherry docker images: Near-RT RIC
Guides
An example xApp using the Golang xApp framework: link
Also check the "md" files in the base directory of many of the RIC repositories by name in gerrit.
Also check the currently still somewhat empty information in readthedocs