Hi Sam, first, what province or state are you in? That will help us know where to point you for supplies, etc.
For canning conversion purposes: 1 US pint = 1/2 litre (500 ml) ; 1 US quart = 1 litre.
BACKGROUND ADVICE
It does take a bit of an investment to get started, in jars especially, but when it comes to home canning, it really is an investment that pays off big time financially.
For high-acid foods (pickles, fruits, relishes, chutneys, jams, etc) you can use a water-bath or steam canner. For low-acid foods, a pressure canner (not cooker) is absolutely required.
So, if you aren't sure about investing money in a pressure canner yet, consider turning your garden veggies into pickles, relishes and chutneys. Many suggest that's the best way to start. (I did the reverse, started with pressure canning, but it was a massive garden surplus that forced me to.)
Always use only tested recipes from reputable sources, and use no recipes that date prior to 1994 -- all kinds of safety changes were incorporated into recipes then to avoid "Delhi belly", etc. If someone ever tells you they know better than the experts in the field, run, don't walk, away from their advice.
As you learn, be wary of two types of people: the safe canning police, who are the wild-eyed religious fanatics of home canning ("no, you can't use a tbsp of flour in your mustard pickle, even if the USDA, Ball and Bernardin say you can, or lightening will strike you down"), and the canning cowboys, the "I have done it my own way forever, and I ain't killed no-one -- just yet" crowd. Good advice should always be able to cite a reputable source based on lab-tested science in the home canning field to back it up.
Stick to modern, tested recipes and procedures from reputable sources, and you will be able to relax and reach with confidence for jars off the shelf to serve people. There's close to at least
two thousand such recipes (including many old favourites updated to new standards) to choose from at the present time and a heck of a lot of them are online -- they will keep you busy!
Here's something I would recommend you consider doing at the start. Make notes of how much you canned, of what, and if you bought the core ingredients, where and how much. Then next year you will know if that was enough of that particular product to can or not, or where exactly it was you got all those yellow beans at such a good price, it will all be a blur by the year after, for sure. It's a bit of a hassle to do the first year, while you are worrying about getting everything else in canning right, but you'll thank yourself for sure the next year.
Okay enough of the general stuff that was probably overwhelming, apologies. Now for some actual usable stuff.
SPECIFIC ADVICE
Grab yourself a free copy of the ultimate Bible of home canning:
The USDA Complete Canning Guide 2015
I compiled everything current I could find about
home canning salsas; there's the link. (I try to avoid posting links to my stuff, but doesn't make sense to copy and paste it all here, flooding the thread.) (Again, be sure to use tested recipes from reputable sources, there are documented cases of health problems from people winging it with their own made-up salsa recipes for canning.) I currently have a mild salsa, a green tomato salsa, and a peach jalapeno salsa on the shelf; great for assembling quick dips along with my home canned kidney or pinto beans and home canned pickled japaleno peppers. Only thing I need is to keep some low-fat sour cream in the fridge and I have a tex-mex layered dip ready for a sudden crowd in seconds.
Ball has a recipe for
spaghetti sauce that can be canned in a boiling water canner (or steam canner.) Pretty much any other recipe for spag sauce, because of all the low-acid ingredients added to them like pepper, onion, mushrooms, meat, etc, must be pressure canned. But consider as well,
Minnesota Mix. It's a mixture of tomato, celery, green onion and pepper, that was developed by the University of Minnesota Extension Services specially for people without pressure canners. It's so versatile, I use it for everything from baked pastas to Indian curries. I only made 12 jars last year as a trial, I will be tripling that this year.
Feel free to ask us as you go.