If you get Linux and then load the deskop style called Cinnamon, it looks and operates a lot like Windows 7. I have Linux Ubuntu with Cinnamon desktop and Windows 10 loaded on my laptop computer. Ive been using Linux about 1 year. Ive used Windows since 1990 and Windows 3.0.
I just recently got a Chromebook, also. Think of a Chromebook as Google Windows. It was only about $150 and boots in about 8 seconds. Chromebook runs a copy of the Chrome browser. You can load all kinds of Chrome browser apps in it. If you only browse the internet and create a few documents, then a Chromebook might be for you. I really like the Chromebook.
Chrome on an android tablet or Windows 10 pc or tablet is similar. There may be some difference with the native Chrome apps from the app store on an android tablet.