I have this book and can recommend it: https://www.amazon.com/Food-Jars-Preserving-Batches-Year-Round/dp/0762441437/ref=sr_1_5?dchild=1&keywords=small+batch+canning&qid=1595436980&sr=8-5
But if you go over to amazon and search "small batch canning" there are others.
Any time you're storing anything in a can you're preserving it and it needs to meet proper acidity, regardless of how long you plan on keep it on your shelf. Source is from Food in Jars, a cookbook I have at home.
I'm just saying I think the video is quaint, cute, but doesn't serve as a proper guide for storing tomato sauce.
I have an All American pressure canner as well. I highly recommend it.
For water bath, I have an ancient graniteware pot, and this new water bath/steam canner. https://www.harvestessentials.com/victorio-stainless-steel-multi-use-canner.html Steam canning has only officially been approved in the past ~5 years. (https://fyi.extension.wisc.edu/safefood/2020/06/30/a-fresh-look-at-steam-canning/).
Books:
Food in Jars has some nice small batch recipes. https://www.amazon.com/Food-Jars-Preserving-Batches-Year-Round/dp/0762441437
Wild Fermentation is good if you're getting into fermentation. https://www.amazon.com/Wild-Fermentation-Flavor-Nutrition-Live-Culture/dp/1603586288/
Regarding dehydrating, I have an Excalibur 5 tray dehydrator. It works really well, but it's on the expensive side.
Other tools I like to have on hand for processing...
Food mill - https://www.oxo.com/food-mill-453.html
Stick blender - https://www.cuisinart.com/shopping/appliances/hand_blenders/csb-179
I have the basic food saver and I like the regular mouth and wide mouth jar sealing attachments are nice for sealing dry goods in jars.
If you're interested in fermenting, you can get a kit that works with mason jars: https://www.masontops.com/products/deluxe-fermentation-tool-set If you get really into fermentation I would recommend getting a larger, dedicated fermentation crock.
Lastly, I can always find some new food preservation thing I think I need at Lehman's. https://www.lehmans.com/category/food-preservation They are not the cheapest but you can find some interesting things.
For good/safe canning recipes, I use:
I highly recommend the Food in Jars cookbook, if you can find it. It's excellent.
I also have to throw in a plug for my favorite green tomato recipe: