Adding an email sign up link

Help! I want to add a link so that people can sign up for my newsletters to the very top, right column of my page. My web address is http://www.coachingforsingles.com if you would like to see what I’m talking about.

Please tell me in VERY VERY easy terms, step by step as this is the first site I’ve ever done like this. I’m CHALLENGED when it comes to this stuff.

Thank you!!