Hey everyone, im pretty new to this community, so sorry if im posting in the wrong section.

But what i need help with is what is depicted in this video:

http://www.youtube.com/watch?v=aJQcbFQRVmw

It is about spawning blocks using triggers. Is there any tutorials out there that show how to do this, or can someone point me in the right direction as to what to do?

Any information would help, and thanks in advance.