If you're looking to get reacquainted with TamTam Messenger & Video Calls, or if there's something specific you've been trying to remember, here are actionable steps and key features that can help guide you:

1. Download and Install TamTam:
- If you haven’t installed TamTam yet, download it from the following links based on your operating system:
- For Android: Download from Google Play - [learn more]
- For iOS: Download from App Store - [learn more]

2. Key Features of TamTam:
- Messaging: Chat with friends and family in a secure environment.
- Video Calls: Conduct video calls with various participants (up to 100 people) using a stable or weak internet connection - [learn more].
- Audio Calls: Make unlimited free audio calls to your contacts.
- Channels and Groups: Create and join channels for broadcasting messages to a large audience.

3. Navigate the App:
- Once installed, launch the app and set up your account by following the on-screen prompts.
- Familiarize yourself with the home screen where you can access chats, video calls, and channels easily.

4. Explore In-App Features:
- Access your contacts and initiate chats or calls from the home screen.
- Explore the settings to customize notifications, privacy options, and data management.

5. Seek Support if Needed:
- If you encounter issues or need assistance, look for a help or support section within the app, or check online resources for FAQs related to TamTam.

6. Stay Updated:
- Regularly check for app updates to ensure you have the latest features and improvements.

By following these steps, you can effectively use TamTam Messenger & Video Calls and maximize its features for communication. If there's anything specific you need help remembering, please provide more context, and I'll assist further!