If you are going to collect early copper, buy the book. But if you just happen to have a few you'd like to ID, post large, sharp images in here. Lots of good copper people in here.
Heck yeah. In fact, if you're fascinated by 'em, buy the book. There's all sorts of amazing little tidbits in there. For instance - everyone knows the very first US Coins, Chain cents, were made in 1793. But did you know the first mintage began the last week of February ? That would put the first coin minted right around February 22nd - George Washington's birthday, who was serving his second term as president at the time. Some think the Mint tried to get it going in time to celebrate Washington's birthday, and the first coin was on that very date.
Depends upon what type of copper coins you're interested in. There's: - half cents - large one cents - Indian Head cents - Lincoln cents - two cents. There is a book for each (and in some cases more than one).
As Kanga has mentioned there are several depending on the date range. I do have a couple of reference sites, but without books it makes them kind of hard to use. I have Penny Whimsy and there is Breens Encyclopedia of Large Cents from 1793 to 1814. Then you have newcomb and grellman books for middle and later date large cents.
I'll start a list of books to consider: Complete Encyclopedia of U.S. and Colonial Coins Walter Breen Encyclopedia of Early United States Cents Walter Breen Encyclopedia of United States Half Cents Walter Breen Die Varieties of United States Large Cents 1840-1857 John R Grellman Jr The Cent Book 1816-1839 John D Wright United States Large Cents 1793-1814 William C Noyes United States Large Cents 1816-1839 William C Noyes These will get you started.
You forgot to mention most of those books are out of print and not always easy to find, even on secondary markets.