How to make Retropie work

This post is for visitors to my family's VRBO house.

In the downstairs bedroom I've provided a RetroPie, a Raspberry Pi micro-computer configured to emulate Nintendo Entertainment System and Super Nintendo for playing each respective systems' video games.

The RetroPie is fairly straightforward to use, but these instruction may help if any problems are encountered.

• Turn on the TV, tuned to video input and plug in the micro USB cable.
• If nothing happens, unplug and try again, as sometimes it doesn't take on the first power up.
• When plugged in you can see a couple LEDs shining through the vent on the side.  When it is working right the red will be illuminated, as well as the green; when it isn't working the red will be on but not green.
• If things are going correctly, a screen with four raspberries will be displayed, followed by some computer script, a 'Retropie' splash screen, a bit more script, an 'Emmulation Station' splash screen, and finally the main interface.
• On rare occasions a guest may be prompted to configure the controller.  Follow on-screen prompts to configure the buttons.  The 'L' and 'R' shoulder buttons should be configured to the 'bottom L' and 'bottom R' buttons, respectively.  Buttons not found on the controller can be skipped by holding down any button for a few seconds.
• On the main interface you can use either USB controller to select Nintendo Entertainment System or Super Nintendo by pressing left or right on the controller 'D' pad, and pushing the 'A' button. You will find long lists of games you can try.  
• If you get tired of one game while playing you can press 'start' and 'select' at the same time to exit from that game.
• The other options probably won't be of much interest to a casual user, but if you find something you like please leave me a comment, as I haven't spent a lot of time exploring the games and such that come with the default RetroPie distribution.  I think there is Doom and Minecraft, but I haven't spent any time on them.

All Super Nintendo and Nintendo Entertainment System ROMs are legal copies of games from my collection, procured between ~1987-2005.

Fully configured devices are available for purchase on my ebay store (link), but the micro SD card that comes with it will necessarily not contain the game ROMs (we aim to avoid unlawful distribution of those files).   If the micro SD card goes missing during your stay a $20.00 replacement fee will be assessed from the credit card that was used to make the deposit for the house.  If the entire system is removed the replacement fee is $100.00.

Incidentally, this system is capable of playing games from systems as powerful as the original Playstation.  A more powerful version capable of emulating Nintendo 64 titles will be made available when the Raspberry Pi 3 becomes more available.