The Viva Learning (Preview) app creates a central hub for learning in Teams where people can share, assign, and learn from content libraries across an organization (LinkedIn Learning, Microsoft Learn, Microsoft 365 Training, a company's own content, and 3rd party providers) to empower teams and individuals to make learning a natural part of their day.
Once your Admin has enabled you for Public Preview
Select your profile image > About > Public Preview.
Select Switch to public preview to accept the terms.
Pin the Viva Learning (Preview) app
In the Teams left rail, select ..., search on Learning.
For the Viva Learning (Preview) app, select ... and Pin.