Trade Secrets is a -nowadays latent- weblog mantained by illustrator Meg Hunt talking about all those little secrets involving the career of an illustrator. I value very high the first posts of this weblog and it is highly recommended to start reading downside-up. In those firsts posts she talks about promotion, the relationship between illustrator and an art director, the process of developing a good portfolio and all those little tips regarding this business. It’s worth the reading.