As of my last knowledge update in January 2022, WhatsApp primarily operates as a mobile messaging application, and the official desktop version, WhatsApp Web, relies on a connection with your mobile device. Here are the steps to install and use WhatsApp on your PC or laptop:
### WhatsApp Web:
1. **Ensure you have WhatsApp installed on your mobile device:**
- Download WhatsApp from the App Store (iOS) or Google Play Store (Android).
- Set up your WhatsApp account using your phone number.
2. **Open a web browser on your PC or laptop:**
- Go to the official WhatsApp Web page: [https://web.whatsapp.com/](https://web.whatsapp.com/).
3. **Scan the QR code:**
- Open WhatsApp on your mobile device.
- Tap on the three dots in the top-right corner and select "WhatsApp Web."
- Use your phone to scan the QR code displayed on the web page.
4. **Use WhatsApp on your PC:**
- Your mobile device and PC must remain connected for WhatsApp Web to function.
- You can now send and receive messages using your computer.
### WhatsApp Desktop (App):
WhatsApp also provides a standalone desktop application for both Windows and Mac. This application doesn't require a constant connection to your phone once set up.
1. **Download and Install WhatsApp Desktop:**
- Visit the official WhatsApp download page: [https://www.whatsapp.com/download](https://www.whatsapp.com/download).
- Download the version compatible with your operating system.
- Install the application by following the on-screen instructions.
2. **Launch and Set Up:**
- Open the WhatsApp Desktop application.
- Scan the QR code with your mobile device, similar to the WhatsApp Web process.
3. **Using WhatsApp Desktop:**
- Once connected, you can use the desktop application independently of your phone for sending and receiving messages.
Remember, your mobile device and PC must be connected to the internet for WhatsApp Web or Desktop to function. Additionally, these instructions may have changed since my last update, so it's a good idea to check the official WhatsApp website for the latest information.