There are indeed many 3D sites and resources, and yes, they only stand to either be very limited or not really help you overall.
"Quick" 3D tutorials are hard to come by because unlike many software packages, 3D is probably best learned in a "holistic" way; in that it doesn't usually give you any much benefit or illumination if you just pecked here and there in different mini-tutorials and learned one thing here, and another thing there... you're best served buying a book. It'll give you a better-rounded view of 3D/3DS Max, and once you have that foundation, any and the rest of the resources (tutorials and otherwise) will be far easier and quicker to learn. Long term, you'll save yourself a lot of grief, time and money following this route.