Mac Pro 2013 - "safe mode" and any helpful tips

I would like to know how to start my Mac Pro 2013 in "safe mode".

In addition, I'm keen to get any ideas on the best keyboard, mouse and/or monitor to use with a Mac Pro 2013 (i.e. trashcan). Since it doesn't come with any of these as standard and the magic mouse and keyboard are wireless when there is a hardware problem it is difficult to know how to start the Mac Pro in "safe mode".

Any helpful tips or tricks are greatly appreciated.