This is what I make sure I have before I start:
1 box of half pint jars with screw lids and bands (washed)
1 box of Sure-jell pectin
a bag of sugar
You also need a large pasta pot.
For my jams, I use the recipes in the Sure-jell box. The recipes have never failed me. It is important that you measure precisely. Basically, you cut and barely mash the fruit. Add the fruit pectin and bring to a full rolling boil (still boiling when you stir it) on high heat. Add the sugar and bring back to a full rolling boil. Boil for 1 minute exactly then remove from heat.
Next, enjoy the fact that you have squirreled away fruit for the winter in your pantry. And if you make enough, you just might be able to give them away as Christmas gifts maybe in racks like these. That is what I am going to do. Friends and family, please act surprised when I give them to you!