Nice choice. Try to stick to the standard repository, kinda like the Play store on android.
I believe Mint tries to have minimal dependence on the command line. But usually it's easier to help others solve problems with the command line since that is easier to write out than how to click through menus. So don't let it scare you too much.
The internet is a friendlier place now, at least in the linux help-o-sphere. People don't let others post destructive "lessons" for people to learn anymore.
That was comment I wrote in a thread about distro recommendations. I think it provides a context in which CL has a clear advantage over GUI.