Quickly create a landing page using something like Unbounce then drive some traffic to it ie. spend $100 on AdWords.
Offer something like free access to your product or service for the 1st 100 signups. If you get traction, you'll know you've got something. Then you can use those initial signups as a beta group.
Go to Meetups in your local area & listen to the things that people complain about & create a list. You'll find out that people usually complain about the same things.
Before you dive in & do consulting full time, make sure you have a few PAYING customers. The biggest issue with consulting is the recurring revenue issue. You want to have paying customers already then get referrals from them to keep business coming in.
"If the value is good, sure"
Good point. I'm glad you brought that up
A few questions:
1. How can you tell if the revenue stats are valid?
2. How do you determine "good value"?