A Tutorial on "Real-time Operating Systems for Embedded Software Development", addressing several Industry Verticals such as Network Equipment Providers, Consumer Devices, Automotive Devices, Aerospace & Defense including Safety Critical, Industrial Devices, and so on. This tutorial is not just about the basics of Real-Time Operating Systems such as Priority based Preemption, but also includes very important features such as Priority Inversion, Advanced Memory Protection, Error Management, POSIX Compliance, Comprehensive Networking and Wireless Stack, Security Protocols, Carrier Grade Networking, Small Footprint, TIPC, Multimedia, Connectivity Middleware, Support for CAN, USB, IPV4/IPVT6, DCOM, OPC, and WiFi etc. Also covers interesting topics such as why a Round Robin Scheduling is not exactly required for Safety Critical Avionics Applications etc, and what are ARINC 653 Compliance and DO178B Certification for Aerospace and Defense Industry. The other topics include various Software and Hardware Development and Diagnostics Tools available with Real-time Operating Systems from hardware bring up to platform and application development.