@treebo88 said in Controller and core help:
One wrong click and you have a world of problems lol...
As @mitu said, it depends, and most problems can be reset just by editing or deleting the resp. config file. One thing I do like about Linux (since late 2006 in my case) is that plain text config files are the norm – many of which will be just recreated with default values if deleted – and thus, don't require a particular tool to edit them.
Just an onlooker's two cents. I wish you success and fun in your journey to a new operating system. :)