Startups use different revenue models to turn online traffic into profit. These models range from showing ads, paid subscriptions, and selling products to using in-app purchases. This note shows some of the most popular web and mobile revenue models.

Startup founders usually don't have enough time to read all the essential books in the startup industry. That's why we decided to continue the series of short summaries of the essential books for startup founders. In our opinion, after the "Lean Startup," the second most important is "The Mom Test," and here's why.

When it comes to the Growth stage, the questions are getting harder. Almost all founders ask "How to identify the best channels for my business?" SMM? Facebook ads?

15 tips how to improve your business without any investments. How to get customers, how to increase cash flow, how get things off the ground. And all these with zero capital.

Charles Wiles wrote this article about Angel investments. It's meant for young Angel investors: general dos and don'ts? what to look at in startups, what the key factors are.