Hi Jim n Cindy! You will need Marvin Weaver's book on strikes, also if you are going to collect out of Nv. strikes you need Non Nv. strikes by Christie Gregory & Dennis Finn. A number of people have data bases that are free. Rik d cop has one for $20.00 that he can email you that is great. You must know what to look for to find them. If you can make it to the convention, you will learn more than you can remember. Get a list of the casino's that have strike machines. Good Luck in your new hobby, it is a great one. Les Hassel SS #77 Email lhstrikes@cox.net I also have a list of traders.