Here,
I got Windows 8.1 with my laptop HP Pavilion that I have already written a whole Review on it. You may check it on my profile.
Now coming to Windows its a myth that most of the people says "windows 8, 8.1, 10 is very hard to operate and very difficult to understand and control"-this is a myth or a fake that people says.
1.) Help Functionality
Windows 8.1 has a vast functions than in windows 7 or older e.g.- Food & Drink app, Help+ Tips app, Start and Apps, Get Around, Whats new, battery saver etc.
2.) User Friendly
Its very User Friendly for most of every problem it has a solution for it or launches Trouble Shoot for it. It may seems difficult but becomes easy every time you explore it more.
3.) Ease of Installation
There is no difficulties in Installation till you are installing an Windows for first time. And its easy for an beginner also to install it himself but remember "nothing is perfect".
4.) Features/Functions
I cant even express or write How vast the functions and features does this operating system carry. but I can give you some of the Examples- Windows store, Battery saver & Performance, Skype, Switch Input Methods, News Feed, Food & Drinks, Maps, Films & T.V., etc.
5.) Service & Support
Support is full from Microsoft. You got any problem get a solution of your problem on Microsoft Website.
Services- There is a regular update for windows after every Week/Month which enhance the windows more and make it easy to understand.
BONUS POINT - Windows 8/8.1/10 has its own AntiViruses for them which comes Pre-Installed in them.
Tip - If you are looking for an Windows for using features Windows 8.1/10 are the best matching for you.