I will quibble on one point though, your comment about BBT getting 13,000 subscribers before launching even though you “had nothing but a coming soon page and an invitation to join our email list.” As I recall, you also had a freakin’ awesome video on that page as well that just made people yearn to give you their email address, even without knowing a thing about BBT. So that didn’t hurt, either. ; )
A blog itself isn't really a business—it's more of a platform for other income streams. Your content alone won't likely make you money. Instead, you'll have to get advertisers, sell services like consulting or speaking, use affiliate marketing to get a percentage of sales from links people click on your blog, or maybe offer products like ebooks or premium content to actually generate income. ProBlogger has an excellent post about these different ways you can make money.
Affiliate sales comprise a large chunk of revenue for most big-name bloggers. For instance, Pat Flynn made $53K last month from affiliate sales, compared to "just" $9,500 from book sales. In general, look for affiliate products with higher price points; web hosting companies are a great choice if it makes sense in your niche, with payouts of anywhere from $60-$130+ per signup.
Oh yeah, I also do all of the above for articles that I write for other blogs. So, if I'm guest posting on a blog, I tend to share it even more than I do my own content. If you guest post on a person's website, you should do the same – the more you share it, the more traffic that person will then get, and the more likely they are to re-share it too.
Don’t get me wrong I have made many mistakes along the way but once I knew what I was doing it became a lot easier and more enjoyable. Many of my friends have emailed me or called me to find out more about “What Jamie Does”, but it can be a little hard to sink in at first as to how you can actually make a real income from running a successful blog(s). Therefore I have decided to create this guide for my friends, family, email subscribers and anyone else who wants to start doing “What Jamie Does”.