@wekking: YOU ROCK! I got it all “fixed” up and now the sharing buttons show on my posts. Here were the steps I took, in case anyone else needs some direction:
1. Logged into my self hosted WordPress blog.
2. Clicked on Posts.
3. Clicked on an existing post.
4. Clicked the Screen Options button in the upper-right corner > Checked the Excerpt box. (You only do this once and then all other posts should have the Excerpt field show up.)
5. Went to the Excerpt field and just enter a space.
6. Clicked Settings > Sharing.
7. Dragged in the social media services into the Live Preview area > Save Changes.
8. Voila! Your post has the social media buttons!