There are plenty of tutorials on how to start with Bicep so that I do not need to rewrite everything. A great post has been published by Tobias Zimmergren: https://zimmergren.net/getting-started-azure-bicep/
But I want to use this post to collect some important links:
Bicep Learning Path at MS Learn: https://docs.microsoft.com/en-us/learn/paths/bicep-deploy/
Bicep Playground: https://bicepdemo.z22.web.core.windows.net/
Bicep Docs: https://docs.microsoft.com/en-us/azure/azure-resource-manager/bicep/
Bicep Examples: https://github.com/Azure/bicep/tree/main/docs/examples
Bicep Language Reference: https://docs.microsoft.com/en-us/azure/templates/