To Upgrade your solution from a 2010 project to 2013, you need to follow these steps
First edit your .csproj file (for c#).
Modify the target framework to this:
Add this a node for the office version, I put mine directly below the TargetFrameworkVersion tag
Reload the project and update your referenced assemblies. If you haven’t specified a specific version they should already be referencing the v15 (SharePoint 2013) assemblies.
Do a find replace for
184.108.40.206. This updates any references on your pages, layouts, and master pages to the v15 assemblies.
Change any calls to
Check each file to do a check for any hive references. You’ll need to add a /15/ to these. EG: _layouts/ to _layouts/15/
Open the package “folder” in visual studio then update the properties for that package to use version 15.
Finally do a compile clean up any missed items. Deploy your solution and make sure to test thoroughly.
I HAVE INCLUDED A FEW OF THE SharePoint 2013 Labs hat are available for download. I hope everyone can make the time to download the LABs and walkthrough them, as this will give you a better Idea of the new features in SharePoint 2013
Test Lab Guide: Demonstrate SAML-based Claims Authentication with SharePoint Server 2013
This paper provides a brief introduction to SharePoint Server 2013 and illustrates how to create a three-tier test lab that uses SAML-based claims authentication.
Test Lab Guide: Demonstrate Intranet Collaboration with SharePoint Server 2013
This paper helps you configure an environment to demonstrate the intranet collaboration features of SharePoint Server 2013.
Test Lab Guide: Configure SharePoint Server 2013 in a Three-Tier Farm
This paper provides a brief introduction to SharePoint Server 2013 and illustrates how to create a three-tier test lab.
Test Lab Guide: Demonstrate Forms-Based Authentication with SharePoint Server 2013
This paper explains how to configure and demonstrate form-based authentication for SharePoint Server 2013 based on the Test Lab Guide: Configure SharePoint Server 2013 in a Three-Tier Farm (http://www.microsoft.com/en-us/download/details.aspx?id=30386).
Hands-on Lab Online: Advanced Web and Worker Roles
Hands-on Lab Online: Introduction to Windows Azure Virtual Machines
SharePoint Composite Handbook
A SharePoint Composite combines data, documents, and business process in a useful, productive way by assembling, connecting, and configuring the basic building blocks of functionality available in SharePoint 2013 and Microsoft Office 2013 so you can rapidly create business solutions.