Ready to give home canning a try? Here are all the supplies that you'll need to get started:

Photo Courtesy of PriceGrabberIf you plan to can fruits, tomatoes and other high-acid foods, a water bath canner is the canner for the job. 21-quarts is the most common size, but you can also find larger versions. If you decide to buy one second-hand, make sure it still has its lid, and preferable its rack.

Photo Courtesy of PriceGrabberIf you plan to can vegetables, meats, seafood and other low-acid foods, you'll need to purchase a pressure canner. This type of canner is capable of reaching 240 degrees Farhenheit – the temperature required to kill bacteria.
Most canners come with a rack to hold the jars, but if yours is missing or worn out, you can purchase one separately.

Photo Courtesy of PriceGrabberGlass jars with lids and rings are required for foods that will be stored at room temperature. Glass or plastic freezer jars can be used for foods that will be stored in the refrigerator or freezer.

Photo Courtesy of PriceGrabberUsed to lift hot jars out of the canner.

Photo Courtesy of PriceGrabberUsed to lift lids out of boiling water.

Photo Courtesy of PriceGrabberMakes filling jars faster and less messy.

Photo Courtesy of PriceGrabberNeed a good canning reference book? The Ball Complete Book of Home Preserving is the one to have. It includes canning instructions, tips and 400 recipes.
Tips and Warnings
1. It may be cheaper to buy a canning kit that includes all of these items than to buy each item individually.
2. Some newer tomato varieties are lower in acid than most, and may need to be processed in a pressure canner.