Simple Sidebar Opt In Form

If we look at this site...
http://freelancewritingriches.com/how-to-start-a-freelance-writing-career/
... there is an opt-in form at the sidebar.

I want a similar sidebar opt-in form at my blog post too that looks exactly the same. The sidebar opt-in form has got to be in some sort of sidebar template so that I can turn it on and off.

My website or blog is http://nlpliferesources.com/4-definite-ways-to-fail-as-a-coach/

I am looking for someone who can do this.