If you use Google to search the Web for solutions to particular AutoCAD issues, it's pretty likely you've already discovered YouTube's Autodesk Channel. There are dozens and dozens of video clips here that cover not only AutoCAD and AutoCAD LT, but other Autodesk products like Inventor and Revit. You can subscribe and receive e-mail notifications of new videos every couple of weeks. Check it out at www.youtube.com/autodesk.