FallenDemon:
Which order do the 8 anodes and 8 cathodes go into which pins on Arduino board??Anyone else?
It's 8x8, so [you] decide if COLumns are anodes or cathodes and the ROWs will then be the other.
Then decide if you're going to present data as:
Rows - lines across strafing from top to bottom
OR
Columns - lines from top to bottom strafing across
Then decide if you want to do a bunch of digitalWrites or get into Port Manipulation (!)