Substack to launch Substack Grow next month, a free six-session course over Zoom to help writers build a following and earn their first $1,000

Substack to launch Substack Grow next month, a free six-session course over Zoom to help writers build a following and earn their first $1,000  —  The top 10 publishers on Substack bring in more than $20 million a year in subscriptions, underpinning the newsletter platform’s revenue growth.