Really Good Business Ideas

Really Good Business Ideas

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Information Into Insight: How I Actually Use NotebookLM Day to Day
The AI assistant that helps me work faster, connect ideas, find patterns, and turn research into real insight.
 • 
Casandra Campbell
3
What Is The Average Paid Subscriber Conversion Rate on Substack?
Really good business ideas to help you start and grow a profitable business (including on Substack). All ideas are backed by research and analysis.
 • 
Casandra Campbell
2
A Highly Profitable Side Hustle for People Who Love to Attend Conferences and Learn
Learn what you love, then get paid for it.
 • 
Casandra Campbell
The Subtle Skill of Having Strong Opinions (Without Being Stubborn)
Why conviction matters and how to keep it from turning into rigidity.
 • 
Casandra Campbell
Everything You Need to Know to Start and Grow a Business on Substack
No experience needed.
 • 
Casandra Campbell
4
The State of Substack: By the Numbers
A comprehensive breakdown of platform-wide data, plus key benchmarks to help you evaluate your own growth.
 • 
Casandra Campbell
3
The $7 Million Question: Are Super Bowl Ads Worth It?
What the data says about the most expensive ads on earth.
 • 
Casandra Campbell

September 2025

The New Substack Status Game: Paid Subscriptions Badges
What those flowers mean, how to get them, and why this change matters more than you think
 • 
Casandra Campbell
31
Your Feedback Sucks (Here’s How to Fix It)
Forget vague praise and awkward corrections, here’s how to deliver feedback that builds trust and sparks real improvement.
 • 
Casandra Campbell
6
Win Readers in 250 Words or Less: How to Nail Your Substack Author Bio
A step-by-step guide to crafting an author bio that sells your story and grows your Substack audience.
 • 
Casandra Campbell
Hindsight May Be 20/20, But That Doesn’t Make It Right
Really good business ideas to help you start and grow a profitable business (including on Substack). All ideas are backed by research and analysis.
 • 
Casandra Campbell
A Complete Guide to Substack Visuals
All the visuals you need to make your Substack look great and feel unmistakably you.
 • 
Casandra Campbell
15
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