Leonardo

Look in the PICBasic manual for DATA, READ and WRITE instructions.

DATA - presets an EEPROM location at Program time (if you have PBC rather than PBP, then you don't have DATA and this is the EEPROM command instead)
READ - Reads a BYTE from EEPROM
WRITE - Writes a BYTE to EEPROM

It's very simple... go try it...