Recently I have renovated an old computer which once belonged to my dad (the old HDD crashed, and I just bought a new one to replace it). My parents want me to fix this computer for my 5-year-old sister to use. I decided to use Linux Mint as the OS because everything (flash, mp3, etc.) is already configured.
How do I create a user account in Linux Mint with limited access for my sister, so that it won't mess up the entire system?
All she does is surf the web, so I'm just worried that she might accidentally mess up a system setting that I eventually will have to fix it.