The schematics can be found here.
Examples can be found in the Arduino IDE under File -> Examples -> mSD_Shield
and File -> Examples -> SD
.
If using the Ethernet-Shield together with the mSD-Shield, this must be initialized before using the SD-Card. Because otherwise the W5100 Ethernet controller blocks the SPI interface.
The mSD-Shield v2 uses the ICSP connector for the SPI signals and so all Arduino boards can be used.
For Hardware-SPI support on Mega boards connect the mSD-Shield v1 as follows. No Software changes are required.
Mega mSD-Shield v1
SCK 52 -> 13
MOSI 51 -> 11
MISO 50 -> 12
For using the RTC on Mega boards the I2C pins have to be changed.
Mega mSD-Shield v1
SDA 20 -> A4
SCL 21 -> A5