I've read through a lot of them over the years, and there's plenty of good info right here!
+1 for Pat Flynn (smartpassiveincome.com) Even if you're not an affiliate marketer, e-book seller, etc., he has plenty to learn from.
Also, while I haven't read much Tim Ferriss, his article about launching his first big book, and the actual work he did at promotion/PR, is great reading for any business person.