Dru Riley of Trends.vc covers personal branding in the latest edition of the Trends Report. He outlines some predictions and opportunities for building your personal brand with more links for background information. I like the simple format of his newsletter. The free version has limited information but it is still a great read every week. Trends.vc is another good example of a paid newsletter business model. The free version offers a lot of great value, but you need to subscribe for the full reports.