All of the "Startup" resources, like The Lean Startup, etc that aren't busy glorifying VCs or the SV model, are useful for these businesses.

The only difference between a "lifestyle" business and the "Silicon Valley" model is whether you are in control over your own destiny and focused on building a business, or whether you're selling out to people who want to increase your risk and their possible profits, with the expectation that you'll get a nice bonus in your acquihire.

In a way, YC and VCs have ruined startups, by making people think this SV model -- which is great for Facebook, google and yelp, but terrible for the billion other startups is the One True Way.