Become an expert by collecting other experts in your field or other fields

How do you become an expert in a field? By writing about that field, repeatedly, until you have mastered it to the level which people find you easily and draw on your expertise.

A big part of being able to write about something twice a day is to have a ready collection of other people to call on for ideas or to ask for details or referrals. By being ready to tap into other people's expertise, you figure out what you need to know fast.

Here from Anne Lamott's Bird by Bird:

There are an enormous number of people out there with invaluable information to share with you, and all you have to do is pick up the phone. They love it when you do, just as you love it when people ask if they can pick your brain about something you happen to know a great deal about -- or, as in my case, have a number of impassioned opinions on.

This is part of the "blogger's secret" series.