Van der Meij, H Wrote a nice article [1] about minimalism in documentation referring to the first how-to guide (First_Minimal_Manual) [2] on how to use smalltalk for an IBM Displaywriter System (1980). This guide is all about just getting started, and if something goes totally wrong, you just reboot the machine.
People learn by doing. For new user, unfamiliar with your service, you have to reassure them that they can undo everything. This allows them to explore the system freely without any anxiety of doing something permanently wrong.
People prefer to be shown what todo instead of being told what to do. Ikea and Lego manuals for instance never tell you to put screw B1 into hole 7A in the right side of panel 14B Screenshots in your help center articles help a great deal with this. But these are hard to maintain, that is why we created Cliperado [3]
[1] https://www.utwente.nl/en/bms/ist/minimalism/
[2] https://www.utwente.nl/en/bms/ist/minimalism/displaywriter.p... (PDF)