Reference Books
Although reference books might seem expensive, they can save you money in the long run as the information in them helps you to identify the best buys on the market and avoid overpriced items. General collectors should consider a broad reference book, such as the Krause "Standard Catalog of World Coins." If you intend to specialize in U.S. coins, then you will need a title, such as "A Guide Book of United States Coins" by R. S. Yeoman.
Storage
The surfaces of coins can deteriorate significantly when exposed to reactive particles in the air, and they also are prone to knocks and bumps. Therefore, investing in suitable storage is crucial if you wish to keep your coins in pristine condition. Most collectors preserve their coins inside individual cardboard mounts known as 2-by-2s. These inexpensive items are available from online numismatist stores. Collectors then keep the 2-by-2s in an airtight box. While specialist boxes are available, an airtight sandwich box will do just as well.