I just noticed that MSDN posted a ton of SharePoint 2013 code samples on their site… you can find them here: http://code.msdn.microsoft.com/officeapps
I contributed a few to this list, specifically around SharePoint 2013 Windows Azure Workflow:
- SharePoint 2013 workflow: Call an External Web Service: this one shows how to create a workflow in Visual Studio 2012 that calls a web service using the new HTTP activities and the DynamicValue data type.
- SharePoint 2013 workflow: Create a Custom Action: this is the same thing as above, but I moved the web service call to a custom action for use in SharePoint Designer 2013 or Visual Studio 2012 workflows.

Microsoft MVP, Full-Stack Developer & Chief Course Artisan - Voitanos LLC.
Andrew Connell is a full stack developer who focuses on Microsoft Azure & Microsoft 365. He’s a 20+ year recipient of Microsoft’s MVP award and has helped thousands of developers through the various courses he’s authored & taught. Whether it’s an introduction to the entire ecosystem, or a deep dive into a specific software, his resources, tools, and support help web developers become experts in the Microsoft 365 ecosystem, so they can become irreplaceable in their organization.