If you’re new to Azure Functions and/or Logic Apps there is a great open source library for you to browse that contains set of common use cases that are ready to deploy!
If you want to create an Azure Resource Manager (ARM) template that deploys Functions or Logic Apps, you can build your own as shown here. Just provide your GitHub repository URL and it will quickly create an azure.deploy.json file for you to include with your repos.
These samples are available in a either C# or NodeJS and can be deployed to your Azure subscription with a click of a button. The samples cover a number of useful tasks that can easily be incorporated into your application or simply used for learning purposes. If you’re interested in contributing to this project or browsing through the code please take a look at the GitHub repository.