# Guides (/docs/guides)

Each guide walks through one job end to end, with requests you can run in test mode.

<Cards>
  <Card title="Accept payments" href="/docs/guides/accept-payments">Build a checkout with the API. Create a cart, take a card, PayPal or Apple Pay payment, handle 3-D Secure and declines, and capture or void later.</Card>
  <Card title="Webhooks" href="/docs/guides/webhooks">Get events such as order created or payment completed sent to your server, check the signature, answer fast, skip repeats and resend failed events.</Card>
  <Card title="Subscriptions" href="/docs/guides/subscriptions">Sell a subscription with a plan and a cart, follow renewals with webhooks, change items with proration, cancel, retry failed payments and handle grace periods.</Card>
  <Card title="Invoices" href="/docs/guides/invoices">Bill a customer with an invoice. Add products or custom items, publish the draft, send a payment link, take payment by API and follow the invoice events.</Card>
  <Card title="Refunds" href="/docs/guides/refunds">Give money back with the API. Refund a whole order or part of it by amount or items, refund one payment, refund to store credit and follow the refund events.</Card>
  <Card title="Going live" href="/docs/guides/going-live">A checklist for moving your Comecero integration from test to live mode. Tokens, gateways, webhooks, test leftovers, error handling and safe payment retries.</Card>
</Cards>