Hey,
Thank you for helping with the documentation, as Albert said I'm pretty busy, but will try to get back on that soon.
Until then, as SD and EEPROM libraries are Arduino libraries, you can already find plenty of documentation/tutorials online, starting by the Arduino Tutorials :
https://www.arduino.cc/en/Tutorial/HomePageThe examples included with the Arduino Libraries are always pretty simple and well commented, so they are self-explanatory. 1 - Understand how they work 2 - Start to tweak them to get what you want. 3 - Add that in your game. This way you only have one problem at a time, instead of three.