Hey Amy,
I think you have got a great start!
The design is nice and simple. Navigation is easy to find and use. You have a wonderful picture of yourself near the top of the page. And you have excellent placement for your opt-in box.
One thing I would note on the layout / design, is that you need to make the opt-in box draw some attention. Right now it blends in with the page and doesn't draw my eyes towards it when I land on your site.
Also, a great way to start monetizing on your blog, is to put up affiliate banners in your sidebar (the 75x75 pixel ones). That way someone may stop by your page and buy one of those affiliate products.
Now on to your first post

I absolutely LOVE quote #5
Anyways, the topic of your first post is very creative

Pop culture w/ marketing lessons. And on top of that, what you said regarding each quote was great content!
I did notice that it wasn't very keyword targeted. That's okay but on future posts, I would try to target specific keyword phrases. This may not always be possible, but try as much as possible. A great tool that integrates with Thesis is called ScribeSEO. Might take a look at that.
One other note is that on your front page, I would just have teasers of the posts with a "Read More" link. Maybe just a paragraph showing on the homepage, and the full post after they click the "Read More" link.
If you do that, one additional thing you can do to get opt-ins is place another opt-in at the end of each article, saying "If you like what you read, make sure to get regular update in your inbox." Or something like that.
So there are some thoughts. Again I think it is an excellent start. Keep it up.