For starting development with sdnr proceed with SDN-R Introduction and Dev Steps

• SDN-R Development 
• Creating and installing a new feature into SDN-R
• Creating a "component meta-feature"
• High Level Review - DMAAP Listener and RPC/DG Execution
• DMAAP Listener Docker Development and Configuration
• Directed Graphs Development for YANG/RPC Execution
• Installing SDN-R features into SDNC
• Mount IPv6 devices

For running an SDN-R container on a server start with  SDN-R Creating and running instances

• Creating an instance of SDN-R

Working with SDN-R/SDNC and OOM

• Working with the OOM Rancher/Kubernetes installation
• Installation of SDNR/SDNC into ONAP at OWL

SDN-R wt microservices including ODLUX 

• SDN-R microservices - Overview
• Developing ODLUX web application

Using Open Test Framework (OTF)

• Open Test Framework (OTF) through SMO
• O-RAN: O1 interface testing
• O-RAN: A1 interface testing
• O-RAN: E2 interface testing

ONAP instances at OWL

• Experimental, development, stable
• Backup and restore

HINT: SDN-R, SDNR and sdnr are having the same meaning here