I actually take issue with the advice of buying the keys first. I think it's sound advice to buy the keys later. Most people when they start off collecting are novices, and know very little about what they're buying. Let them get their feet wet on the common dates. The ones that go straight for the key dates are more likely to be the ones that buy the ACG coins, and wonder later why people tell them their 'valuable' coins are not really worth too much. You see, the new collector doesn't usually understand the difficult concepts behind grading, but they know a good "bargain" when they see it. ACG coins look like a good bargain to the uneducated collector's eye. Of course, we experienced collectors know better, but we didn't start out buying keys then did we? Of course, if you're talking about an experienced collector starting a new series, then go right to the keys, of course.