I recently bought an e-book about online self promotion from the Red Lemon Club run by Alex Mathers, who also runs a contemporary illustration blog called Ape on the Moon. I have visited Alex's website for a while now and signed up to his newsletter as there are always really interesting and important tips and advice about promotion and setting up a business/brand as a designer. The e-book is over 200 pages long and has 3 pages of resources too! I am slowly making my way through it and so far it is all really interesting, with a huge amount of information that will be useful in the coming months.