Here's what you need to start water bath canning.
Please note that these links are affiliate links which means that if you click over to Amazon and make a purchase, I get at teeny, tiny commission and it makes zero impact on your checkout total. It just keeps your favorite canning blogger in business ;)
You need a canning processing pot. It can be this one...
These jars are the quintessential mason jar and I like them for canning juice in particular.
These are smaller size jars, and they are great for jam, applesauce (to-go size!), and more.
Here's a really nice canning funnel, sold by itself.
You need trusted, tested recipes from a cookbook like one of these. I have these books and love them all.