How to wire 0.91/0.86 inch display to i2c?
If you need a connector, the 0.62mm pitch connector is an oddball, apparently only available from a couple of Chinese manufacturers, eg. Wenda LW06121. Suggest you ask the display supplier to source them for you. They list similar connectors for a very reasonable price. However the datasheet refers to "Soldering Type FPC" so it looks like it's mainly intended to be soldered to the PCB directly (and being single-sided that's not a problem). 

Electrically, you can refer to the full datasheet, which is pretty complete but does not have a reference schematic, plus the driver chip datasheet, plus this demo circuit schematic: 



As you can see, there's a couple of charge-pump capacitors C1/C2, some bypass capacitors, a resistor to set the OLED current, and the usual pullup resistors on the SDA/SCL I2C data and clock lines. 

There's also demo code available.