This is a newbie on using the GPIO on the Raspberry Pi. I also did some search and reading about using the GPIO, but I am confused

What I'm going to do is to attach an 8 relay to the RPI.

[This is the relay i have.](http://www.sainsmart.com/16-channel-12v-relay-module-for-pic-arm-avr-dsp-arduino-msp430-ttl-logic.html)

There is a link on the site for more info but it only relates to the relay.

I went for this relay after seeing [this video on youtube](http://www.youtube.com/watch?v=8X6PgYaegz0) .

Do I need some sort of buffer in-between the RPI and the relay board or can I use pin 2 and 6 on a Raspberry pi V2 to power the relay board or both?