One Day Out Conf 206 - Wes Bos - Creatong and launching your own products
Blogging and Screencasts are a must. It wasn’t in the presentation but I feel that people who succeed in making courses and books are the ones who did similar things for free beforehand. Additionally it is a great way to practice those skills which will make the final paid product multitude better.
In WB example he made a couple blog posts about sublime text, they blew up. Lesson here is you never know what works. This blow up allowed him to collect email.