Although Chrome OS is competent at handling web-based workloads, by design it's light on features compared to a full desktop operating system, which is presumably where many of its users are coming from. Fortunately, if you're on Google's operating system and wish it was a little more flexible, it's possible to install a fully functional copy of Linux on many Chrome devices.
Although Microsoft concluded its free Windows 10 upgrade program over a year ago, the company has yet to close some loopholes that were opened for folks running Windows 7, 8 and 8.1. If you thought about taking advantage of the promotion but never got around to it, there's nothing stopping you from downloading a free copy of Windows 10 from Microsoft's servers.
Tails is one of my favorite operating systems. It's a great platform if you're looking to transition from Windows to Linux, plus it offers top notch privacy features and tools out of the box. Among the main improvements in Tails 3.0 (based on Debian 9) we find a new startup and shutdown experience, a lot of polish to the desktop, security improvements, and key upgrades to the included software. You can download here and read the complete release notes.