This here is a Micro SD Card adapter which you can use to read and write Micro SD with your Arduino or other favourite microcontroller.
Includes level shifting so safe to use with a 5v Arduino without any problem, simply provide 5v to the Vcc pin.
Using the Arduino SD library (or sdfatlib natively) you can read and write files onto your FAT-16/32 formatted SD Card (please, don't use your SD card containing the only copy of your wedding photos!) very easily, in the Arduino IDE go to File : Examples : SD for multiple examples of reading and writing.
Pins are clearly marked.
All of our products are shipped from Christchurch, New Zealand using CourierPost for NZ, and Airmail for international.