Starting with a solution (no matter how small) is like building a key without a door. If you simply flip that around and start with problems, solution building becomes a lot easier, and you actually build keys to doors that take you places.
After that, it’s entirely up to you. Airtable is our weapon of choice, and Typeform is a great way of creating front-end or lead-in interfaces. Stripe & PayPal can handle your payments, while MailChimp and Intercom can automate customer marketing & communication.