Back in the old days, very old days - 8 bit processors, 5-1/4 floppies and dreams of hard drives - I met a man whose business it was to provide telephone support for the users of his client's software. He told me that the most commonly asked question was "Where is the any key?" It wasn't long before software publishers went to "Press the space bar to continue."
I met a man whose business it was to provide telephone support too. His customers were very upset that it took 3-5 days to get help, but they had a working phone when he was done.