Here's something to start the FAQ off. This on the front of this thread would help a lot of questions being asked
1.) When will the Homebrew Launcher be released
A.) 22nd Novemeber 2014
2.) Can I play Roms, CIA files etc with the Homebrew Launcher?
A.) No
3.) Does this make my 3DS Region Free?
A.) No
4.) Do I need the game in my 3DS every time I want to use the Homebrew Launcher?
5.) What firmware does my 3DS need to be?
A.) Anywhere from 4.0 to 9.2
6.) Can I use the games Rom with my Gatweay/Sky3DS card to install the Homebrew Launcher?
A.) Yes
7.) Will there be other games in the future that will allow the Homebrew Launcher to be installed?
A.) Possibly. The game must save to the 3DS SD CARD and must not be an encrypted save. 6.x firmware games started encrypting their saves on the SD Card I believe. So games made supporting pre 6.0 firmware that save a file to the SD CARD (like custom levels etc) may be able to be used.
8.) Will Nintendo Patch this game or just patch the firmware?
A.) Nintendo can't really change the RETAIL version of the game so any firmware after 9.2 will most likely have this hole plugged up tight. Don't upgrade your Firmware.
9.) What game do I need?
A.) Cubic Ninja (RETAIL or JAP Eshop)