This mind map lists all important PI Topics like mentioned below and few details about each topic. We can use this mind map as a learning progress tracker.
PI Overview
System Landscape Directory(SLD)
Enterprise Service Repository(ESR)
Integration Directory(ID)
Mapping Concepts
Mapping Programs
Adapters & Adapter Engine related topics
Proxies
Monitoring
ccBPM
SAP PI Topics Overview mindmap as image format for downloading purpose. Please feel free to share.
