I'm looking where I can get started with adding an API to my website. What I'm looking to do is currently I have the basic form that enables the person to enter their e-mail address and then the page is sent to the constant contact website where they enter there first and last name to add to a newsletter. I need to be able to create my own form and when the person submits their data it gets added to my constant contact contact list but it stays on my website without transferring them. Well I'm the webmaster of this site and I'm proficient at programming but this is the first time I've used APIs. Any help would be appreciated. In the meantime I'm going to be browsing this site some more.
Thanks.
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