Here's how you can master Operating Systems as a beginner.

Begin with the basics. Understanding the core functions of an operating system is crucial. Learn about the roles and responsibilities of an OS, such as managing hardware and software resources, providing a user interface, and ensuring security and access controls. Resources like online courses, textbooks, and tutorials can be invaluable at this stage. Books like "Operating Systems: Three Easy Pieces," "Advanced Programming in the UNIX Environment" by W. Richard Stevens, and "Linux Kernel Development" by Robert Love are great starting points.

I think the overview on OS fundamentals is concise and covers essential concepts well. It emphasizes the importance of understanding the operating system's role in task management, process lifecycle, and scheduling algorithms. This foundational knowledge is crucial for anyone looking to build expertise in operating systems. The explanation is clear and provides a good starting point for further exploration.

As an IT or specialist in other field having, some skills about os fundamentals is a lot helpful for sometime making choices and set your environment. In most enterprises for an easy task you see people even some chef asking another one helping him. In different situation that last maybe an inside threat you’d never know.

Pour maîtriser les systèmes d’exploitation en tant que débutant, commencez par comprendre leurs concepts de base et leur rôle. Choisissez un OS pour débuter, comme Windows ou MacOs pour leur convivialité, ou Linux pour une compréhension plus approfondie. Installez et configurez l'OS, en explorant l'interface utilisateur et en personnalisant les paramètres. Apprenez les bases de la ligne de commande pour chaque OS. Consultez des documentations, suivez des tutoriels et pratiquez régulièrement pour renforcer vos compétences. Rejoignez des communautés et forums en ligne pour poser des questions et apprendre des autres. Expérimentez sans craindre les erreurs et restez informé des mises à jour et évolutions technologiques.

As many or few of us i have been using different types of OS, but personally I moved to MacOS which become my favorite one. Since a long time i was working on windows as most of us and tried most important part of its features that I still appreciate, linux also with Kali linux specially that I’m still using with my macbook pro of course. The unix based stuff of it participates a lot to this power.

Familiarize yourself with the different types of operating systems. This includes learning about general-purpose operating systems like Windows, macOS, and Linux, as well as specialized systems like real-time operating systems (RTOS) used in embedded systems. Understanding the differences and use cases for each type will broaden your knowledge and help you choose the right tools for various tasks. For instance, explore how RTOS are crucial for time-sensitive applications like medical devices and automotive systems, where predictable response times are essential. Dive into the unique features of different OS types, such as the modular architecture of Linux, which allows for extensive customization, and the user-friendly interface of macOS.

I've had the opportunity to work extensively with various types of operating systems, each offering unique features tailored to specific purposes. From single-user systems to multi-user environments, and from batch processing to real-time operations, I've explored and utilized these OS types in different contexts. Working with popular operating systems like Windows, macOS, and Linux has provided me with a solid understanding of their distinct characteristics and functionalities. This experience has enhanced my ability to choose the right OS for different user needs and applications, and has deepened my overall knowledge of how operating systems manage tasks, allocate resources, and ensure smooth operation.

Mastering the command line interface (CLI) is essential for effective OS management, particularly in Unix-based systems like Linux and macOS. Start with basic commands and gradually move to more complex scripting. The command line allows you to perform tasks more efficiently and gives you greater control over the system. Practice regularly to build confidence and proficiency. Exploring shell scripting can automate routine tasks, and version control systems like Git, which also rely heavily on CLI, are crucial for modern software development workflows.

Please consider to use the CLI in your daily work, even if you only use your OS for fun or personal purposes. Sometimes your life is easier and you don't know it! A good example is when you want to delete or change files, maybe you want to add a prefix on the names, believe me, this is a very common use case and the CLI do that for you with only one line. CLI is powerfull... CLI is beautiful

Develop a good grasp of the system architecture. This includes understanding the many components of a computer system, such as the CPU, memory, storage, and I/O devices, as well as how the operating system interacts with them. Process management, threading, and inter-process communication are important concepts to understand. Studying system architecture can help you gain a greater understanding of how an operating system works. Explore advanced subjects such as cache coherence, NUMA (Non-Uniform Memory Access), and the effect of hardware virtualization on OS performance. Understanding these details might help you improve system efficiency and build efficient applications.

The basic idea of a computer is memory, disk and processor. But it's not the only group of components that you need to know when you buy or use a computer with an specific OS. Maybe you're wasting your power beacuse the OS is not the best option for you. Please read about the screen quality, the buses, the motherboard and the specifications fo your hardware before selecting an OS. And please, try a different OS at least one time...

Above every cool feature you have and beautiful design, comes the most important part of OS: security principles. Having a little bit of practice or awareness about this domain. Lot of people are using devices without caring too much about their security or risks coming with. But fortunately nowadays their guys trying sensitize them on this. This is appreciated

Security it's not only for developers or experts. Every person who have a computer needs to be in touch with every security new in general terms: probably you'll not going to learn about hacking or create an anti-virus, but definitively how to know if a website is secure, the files you donwload, extensions, types of installations, etc.

Linux is a great OS for everyone. Even if you only want the computer to make your homework or for recreative purposes. I strongly recommend you to install virtual machines, test Windows 10, 11, Linux (probably Mint or Ubuntu to start if you're a beginner) and compare your experience. You can have a great surprise.