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The Golden Rule of Switching to Linux: Restructure Your Life
(thelibre.news)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
I think a second machine is way better than dual booting. Dual booting is a pain in the ass. I try to avoid rebooting the machine for any reason, its disruptive.
Better get an old cheap thinkpad or small PC. And you dont have to take the risk of learning about partitioning on your primary machine as first baby step. Keep your important stuff where its safe until such time as you are comfortable switching over.