You can download and install Microsoft Teams on various devices:

For Windows/Mac:

1. Go to Download Microsoft Teams Desktop and Mobile Apps
2. Click Download for Desktop
3. Run the downloaded file and follow the installation prompts

For mobile devices:

1. Open your device's app store (App Store or Google Play)
2. Search for "Microsoft Teams"
3. Tap Install or Get

For Linux:

1. Visit Download Microsoft Teams Desktop and Mobile Apps
2. Select your Linux distribution
3. Follow the provided installation instructions

Web-version:

1. Go to Microsoft Teams
2. Sign in with your SIUE email address and password

For detailed system requirements, see Microsoft's guide: Teams System Requirements