jimij

What is the best reference material to see figures on the different types of coins and their current and historical demand. Are there any sites that compile this type of info from Auctions and other market info?
Is the greysheet the best possible source of this info? Could someone elaborate of what info the greysheet and bluesheet provide?

Also I understand that for a beginner its best to start off focusing on a series of coins. I'm trying to determine what my focus should be on. I'm not exactly overflowing with money. I'm approaching coin collecting from more of a collection standpoint then from a investment standpoint ,but I would prefer to purchase coins that will appreciate in value and are rare enough to prevent any major loss. I'll probably pick up coins in the market of $100.00-$500.00 and possibly higher at small intervals.

For this purpose I need to have some data on the current market to determine undervalued coins and try to stay away from those with so much demand that the costs become astronomical. But I don't want to purchase a series that never seems to be in demand and therefore is stagnant in the market.

Any suggestions and helpful tips would be appreciated ?