This tutorial will guide you in building a simple web part that uses one of the Office UI Fabric components, DocumentCard.
You can find written version of this tutorial from following location - https://github.com/SharePoint/sp-dev-docs/wiki/HelloWorld-WebPart
Complete web part is available from following location - https://github.com/SharePoint/sp-dev-fx-webparts/tree/master/tutorials
Thanks for your interest on the PnP initiative.
If you have any feedback or comments related on this web cast, please use the Office 365 network (SharePoint Developer group) to provider your input. Thx for your interest advance.