How can I move a wordpress blog from the wordpress site to my new server?

A friend of mine wants to host my blog on his server, but he is not sure on how to do it.

Could someone please direct me to a guide I could show him?

Please/Thankyou!

My website was originally located at something.wordpress.com last year. I have since moved it to tacticaltechnique.com. I described the process here: http://www.tacticaltechnique.com/about/welcome-to-tacticaltechniquecom/

There is a link in that post to a discussion I started on wordpress.org, too.

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