Testing & Deploying forms:

I'd like to say Randy is doing an excellent job with the php tutorials. I've really been enjoying them and learning alot however I am bit confused about forms. I followed the php tutorial up to the point in which Randy refers to his blog: http://blog.teamtreehouse.com/sending-email-with-phpmailer-and-smtp. I got lost right away when he says "First, place the two necessary files on your server: class.phpmailer.php class.smtp.php. Does this mean on my localhost server? Or on a hosted server? Its a lot easier following along with the videos because I can see where exactly the files are going. It has more context. I feel being directed to the blog doesn't give enough context for beginners. It is lacking the context. For example the php tutorial goes through the entire process with setting up the checkout process with paypal video and each step by step click by click. I think the same should have been done with the form. It's a major component of almost every website. Anyways, I signed up with Postmark and still a bit confused as to where I should put the class.phpmailer.php and class.smtp.php files. Currently I created a folder for each of them with their perspective names and put them in there under the includes folder (on my localhost server) I'm using mamp. What should I do next? Thanks for the help in advance.