It's built around this image:
The left side has the prerequisites; you have to set up hardware, libraries, and operating systems before you can get into all aspects of monitoring and incident management.
Once you've gone through the prereqs, you can get into monitoring and incident management. The Understanding OS Performance and Capacity how-to explains how to use OS analytics, and the Tuning Monitoring Rules and Policies how-to explains how to fine-tune the monitoring for all of your assets. Managing Incidents and Using Service Requests explain how to deal with incidents and file service requests for them if necessary. Finally, you're given a pointer over to the Feature Reference Guide, which goes into more detail about all of these features.