Here is a very good video tutorial on SharePoint 2013 App model, which is a new feature of the latest version of SharePoint. The video is presented by Andrew Connell an SharePoint MVP and a popular author.
Also you can check a video tutorial on introduction on SharePoint 2013 and a video tutorial on SharePoint 2013 search.
Also you can check a video tutorial on introduction on SharePoint 2013 and a video tutorial on SharePoint 2013 search.
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