This page covers the orange part at the bottom Fig 1.

Fig 1. Computer System Stack
And covered Topics are so far:
- HW Multiplexing → Processors, Memory, I/O devices
- Management → CPU and I/O Scheduling
- Concurrency → Threads, Synchronization
- Persistence → Storage, File Systems
Univ. Course
Difference between Microkernel and Monolithic Kernel
Architectural Support for OS
Processes
Threads
Scheduling
Synchronization I
Synchronization II
Deadlock
Memory Management