Charging is what turns a project into a business. The good news: with Stripe, adding payments to your app is easier than you think, even if you're not a career programmer. Let me explain the full flow with no mystery.
First decide: one-time or subscription
Are you selling something once (a course, a product) or charging every month (a subscription)? Stripe handles both with 'Checkout', a ready, secure, translated payment page you don't have to build or protect. You tell it what to charge and Stripe does the rest.
The flow, step by step
The user clicks 'pay' → you send them to Stripe Checkout → they pay on Stripe's secure page → Stripe notifies you via a 'webhook' that the payment succeeded → you grant access. At no point does your app touch the card data; that lives in Stripe, and that's why it's secure and legal.
The webhook is what you CAN'T skip
The classic mistake is granting access the moment the user returns from paying. Don't: wait for the Stripe webhook (the server-to-server confirmation), because it's the only reliable source that the payment truly completed. There, on the server, you activate the subscription or deliver the product.
Never store or process card data yourself. Let Stripe carry that — it's their job, their security, and their legal liability, not yours.
With that flow you can already charge in your app. Everything else — coupons, refunds, plan changes, invoices — gets added when you need it, not before.