MetalcastingDesign.com offers the following free webinars to use as resources for casting design.

200 Series Aluminum Alloys in Structural Applications
David Weiss of Eck Industries Inc., Manitowoc, Wis., discusses the properties and applications of 200 series aluminum alloys, which offer higher tensile strength than the more commonly specified 300 series alloys, with good ductility and improved performance at elevated temperatures.

Metalcasting Processes
Metal Casting Design & Purchasing publisher/editor Al Spada takes attendees through an overview of the numerous metalcasting processes that can be used to produce the physical and mechanical properties you need in your metal component.  

Casting Design
Given by Jiten Shah of Product Development Analysis, a manufacturing engineering company, this webinar highlights the basics of casting design, from types of alloys and processes to basic steps taken during the design process to ensure you are getting the most--for less--out of your cast part.