There's no shortage of operating systems you can try on a Raspberry Pi. These include general-purpose distros like Ubuntu and Fedora that are ideal for desktop and server use, as well as more niche ...
Windows/Mac/Linux: While it’s gotten easier over the years to make a Raspberry Pi SD card, it’s still a little confusing for people new to the idea of burning images. Etcher is a cross-platform tool ...
Raspberry Pi and other SBCs can boot an operating system from SD cards and USB devices. I own multiple SD cards and am a fan of swapping them to instantly switch to a different OS, such as RetroPie, ...