I have never made jam or any of the stuff you mentioned but my Mum used to make the best ever strawberry and/or raspberry jam I ever tasted. I'm sure she has a recipe somewhere but you know those old dollies who could cook up a storm would always change something up a little to their recipe so, even if you had the recipe, you would never be able to match the outcome 100%. She was also a whiz at sewing. She would make the coolest Raggedy Ann & Andy stuffed dolls for her grand kiddies They looked very professional once she'd finish with them. It was all self taught too. That's how it was in those days. Learn from someone older then practice, practice, practice!
She stopped making those preserves and sewing when she hit about 90 years old. Boy I sure do miss her homemade stuff. Can't buy anything like that in any store or even at the farmer's market. I guess those of us lucky enough to have had mother's who had those talents were truly blessed to have experienced that. Kind of spoils you a little though. Now all the commercially made stuff tastes like crap ?