Operating Systems for PC
Placeholder for a guide about choosing the operating system, installing it, configuring it and using it correctly.
Short answer is Linux. Recommended Linux distribution for beginners is Fedora Workstation. Runner up is Linux Mint, but it is less up-to-date. Device support can be an issue with some laptops, especially Microsoft Surface. There are manufacturers and models specifically targeting Linux users, those are recommended for better device support.
Avoid commercial systems like Windows, MacOS or ChromeOS. Even if you trust the company behind it, they are subjet to government regulations and enable spying on people. They also limit your control over your system greatly.
Explanation coming later.