Here is my jam boiling. Making the jam itself was pretty easy. I left the seeds in because we all like the seeds in our jam. I used 2 of the quarts for jam and froze the other quart for crisp sometime this winter. I found the actual canning part to be intimidating. I've never seen canning done and I had all these visions of exploding jars in my head. I used a boiling water bath and the jars seemed to have sealed. I still have visions of opening moldy jars of jam this winter. I really was wishing I had an Amish neighbor as I was doing this! The pictures on the internet were helpful but not quite the same as having someone there to hold you hand.
Here are my sealed jars. I sealed 6 and had 1 that I didn't seal to use right away. I managed to get blackberry juice everywhere! But it was fun and everyone agrees the jam is delicious. I only used 1.5 cups of sugar for the whole recipe so you really get the blackberry flavor.