

Patience. Same things will work differently than you’re used to, and that can be frustrating.
Also be really sure to help true beginners understand software centers and package managers. I’ve been helping a lot of young people use Linux for the first time this year. Even though I mentioned it the first day and remind them frequently, if for example I ask them to install Java, half of them will download installers from Oracle’s website or wherever.
I’ve been a daily Linux user for sometime between 25-30 years. I’ve used most major distros and the BSDs. For the last several years I’ve used vanilla Fedora Workstation. After a while you just want to use your computer instead of tinker with it.