If your whole computing experience is just surfing web, email, playing MP3, playing movie, sometime office documents (letters, spreadsheets etc.), then Ubuntu will work for you with little learning. You can ask your friend for few tips and you'll be good to go within few hours or days.
If you do anything else, and you can't find appropriate software in default installation then you can find, download and install packages. This is also an easy job, not to scare of. After few practices, you'll be able to add commonly available packages (softwares).
However, if you are trying to find a software and that is not available in packages, then be prepare for some work, you'll need to compile the source code for yourself. It's easy job for software programmers, in-fact daily job, but for non-programmers it usually means nightmares.
If things work good and you don't get any any trouble (error) then any good operating system will work. However, that is not the case in real world. If you have been using Windows for your life then you'll know with experience that in case of error, you can call anyone and ask help. Tech people guide you and you just have to click here and there in GUI (Graphical User Interface) to solve that problem. Most of time in Windows, you don't have to go to command prompt to solve a problem.
But that is not the case in GNU/Linux (including Ubuntu). Programmers who create GNU/Linux love to work in Command Line Interface (command prompt). Therefore, in case of problem, your GUI help will exhaust within minutes and most of time you have to jump to command prompt to write commands and solve issue. That is nothing less than a most scaring nightmare after a most scary movie with a hang-over in morning (without any alcohol consumption). Meaning, trouble all the way for non-programmers
But don't get discourage. Install it and try it. Maybe it work for you. It all depend on the person's adaptability, learning curiosity and trying to continue whatever happens.
Good luck! Do tell us with your Ubuntu experience.