Some people managed to get the NES Classic Edition before the stock ran out, those people may not know how to play some or all of the 30 games, though. For those people, Nintendo is taking you back to when the Nintendo Entertainment System originally released by making available game manuals for download and printing.
For the younger audience, games used to come with a manual explaining all the controls and other useful information. Nowadays, the manual comes either through in-game screens or in the case of services like Origin, though PDF’s downloadable from Origin.
If you are interested in getting a manual for one or more of the NES Classic Edition games, head over to the Nintendo website and find the game you need help with. You can also get digital versions of the NES Classic Edition manual for North America, Europe and Australia/New Zealand locales.
The NES Classic Edition has released but there appears to be nowhere you can actually get one right now. Nintendo has promised more stock will be made available between now and the New Year. So if you are after one, be sure to check your favourite retailer regularly or get on their mailing lists to be informed of new stock deliveries.