You actually have two switches set up on pins 3 and 5
The method you have chosen only checks for a button once a second though, and that's not going to be enough for a controller - you need to use interrupts. There is a three part tutorial starting here
which has everything you need except a list of all the pins - see here
. In addition to the green pins you can use GPIO 0 and 1 (the blue ones) for switches so that's your 9 switches covered.