This is a topic under computer-science.
Sub topics: software-tools/windows
intermezzOS
intermezzos.github.ioProgramming with Posix Threads (1993)
goodreads.comOperating Systems: From 0 to 1
github.comAn efficient implementation of fundamental operating system services (1992)
valerieaurora.orgOperating system concepts (1983)
goodreads.comModern operating systems (1992)
goodreads.comComputer science from the bottom up
bottomupcs.comGT - Refresher - Advanced OS
udacity.comOperating system engineering
pdos.csail.mit.eduReal Time Operating System
onlinecourses.nptel.ac.inHow to make a computer operating system (2015)
github.comComputer Science 162
youtube.comIntroduction to Operating Systems
udacity.comAdvanced Operating Systems
udacity.comHello (Real) World with ROS – Robot Operating System
edx.orgIntroduction to Operating Systems
swayam.gov.inOperating Systems and You: Becoming a Power User
coursera.orgOperating System Fundamentals
swayam.gov.in