As much of an issue as it might be to jump into something without doing your homework first, there’s one thing even worse: never jumping in at all.

In Technically Media’s Tomorrow Toolkit, cofounder Chris Wink, as well as many of the reporters in our network explore the experiences of startup founders and others in the innovation economy from each of our markets and from cities across the country.

One of the best ways to just begin? Write a business plan, writes Wink.

It’s meant for you to put your own thoughts into writing so you can prioritize action. Remember, a business plan is often called a “living document,” meaning that though the fundamentals might likely stay the same, you should update it when necessary. Often companies might return to their business plan a year after launching and then perhaps a few years after that to see if much has changed.

The ebook includes reflections on business from dozens of successful tech sages, including Brooklyn’s own Brad Hargreaves.

“We never thought about how to make money, and we didn’t have the scale of Facebook or Twitter, where we could kick the can down the road,” said the founder of coliving startup Common. “You can’t just go and start a company by building an app anymore.”

Technically Media has been learning and publishing news, information and analysis about building companies for seven years, talking to hundreds, if not thousands, of entrepreneurs. Put some of that experience to work for you.