You can water bath can in a pressure canner.Can you can everything in a water bath canner or pressure canner or is each one used for different things? Never canned before but would like to learn, it looks really complicated/ no idea what to buy.
You can NOT pressure can in a water bath canner.
If your local grocery store has a canning section with jars and lids, they probably have a water bath canner. It's just a large enamel-on-steel pan with a lid and what's called a canning rack inside. It's not very heavy metal. They aren't very expensive, maybe $25...?
A pressure canner is quite heavy, the lid locks on securely, and they are much more expensive. It has a waterproof gasket so that it's water/steam tight, and can build up pressure. Treat them with the respect they deserve. A large vessel of pressurized water/steam on your stove can be very dangerous.
There are a lot of books on canning, with step-by-step directions. Water bath canning is easier, requires less equipment, and safer (as safe as a large pot of boiling water can be, anyway).
If you know someone who cans, ask if you can help the next time they're canning. It is really nice to have someone you can ask questions as they arise.