No matter what you search tyhrough it's a good idea to put a set together. It really doesn't cost much and someday they might be worth something. More importantly it's fun to do and fun to own and it will make a great reference collection.
A nice book that will help with roll searching is "Striking it Rich With Pocket Change", it lists many varieties that could be found in common change, that means that there are no wheatie variations or silver variations. According to the book, a 1969-s doubled die Lincoln cent sold for 125 large, if you find one remember where you heard it and shoot me a cnote for the tip.