I'd love to follow along, but I don't see a parts list to get the matching parts.
1 Raspberry Pi 3 (Model B)
1 1⁄2-sized breadboard
1 4GiB microSD card
1 microSD card USB adapter
1 CP2102 USB TTL adapter w/4 jumper cables
10 multicolored LEDs
4 100 ohm resistors
4 1k ohm resistors
10 male-male DuPont jumper cables
10 female-male DuPont jumper cablesEdit: I suppose they may not be running Linux on the Pi, certainly not the graphical variants on a 4GB card.