Setting up your Google Play password is a critical step in securing your account and personal information. Here is a step-by-step guide to help you through the process:

1. Open the Google Play Store app on your device.
2. Tap on the menu icon (three horizontal lines) in the top left corner of the screen.
3. Scroll down and select 'Settings' from the menu.
4. Under the 'User Controls' section, look for 'Require authentication for purchases' and tap on it.
5. Choose a suitable authentication method - you can select 'For all purchases through Google Play on this device' or 'Every 30 minutes'.
6. Follow the on-screen instructions to complete the setup process.

It's important to choose a strong and unique password for your Google Play account to prevent unauthorized access. Make sure to use a combination of letters, numbers, and special characters for added security.

By following these steps, you can help protect your Google Play account from unauthorized purchases and keep your personal information safe online.