Display is standard oled with SPI or i2c communication so you can talk to them with any microcontroller that's powerful enough.
Most PIC controllers will have hardware spi or i2c. The OLED display that guy used is on sale on Adafruit as the following comments say, so if you go on the sale page, you'll find there documentation for it (how to talk to it using your PIC). If not, it's enough to go on Digikey, mouser, newark and search for a similar oled display with the same pinout and the datasheet for those displays will contain the instructions and everything you need to know.