I understand most of the pins on the board except WP, A0, A1 A2
WP - Write protect, do I have to use this and how to use if I want?
A0, A1, A2 - Analog/digital inputs?
7.1 A0, A1, A2 Chip Address Inputs
The A0..A2 inputs are used by the 24LC32 for multiple
device operation and conform to the two-wire bus standard. The levels applied to these pins define the
address block occupied by the device in the address
map. A particular device is selected by transmitting the
corresponding bits (A2, A1, A0) in the control byte
The default I2C address is 0x50 and there are three external address pins / jumpers to allow addressing of up to eight EEPROM devices on the same bus.