I actually surprised myself when I looked to see if I had a cranberry jelly recipe and I did! As far as making smaller batches of jam to keep in the fridge, I wouldn't recommend it, mostly because people tend to forget when something was made and leave it for too long. You can buy the 1/2 cup sized jars ( I believe they are the quilted ones that come that small), and just fill them. That way there isn't that much to open and eat in a short amount of time. Plus jams/jellies will last more than one year if kept cool and dry, and unopened of course. I am including instructions for using a large kettle to water bath the jams in too in case you don't want the expense of a water bath canner just yet. I wouldn't recommend this for anyone wanting to do jam on a larger basis- buy the equipment or borrow it from a friend.
Here's the recipe:
Cranberry Jelly
4 cups cranberry juice
6 cups sugar
1 3oz. pouch Certo liquid fruit pectin
Fill large pot with hot water half full. Place a round cookie cooling type rack in the bottom of pot. Place over medium heat and bring to almost a boil. Meanwhile place another pot of water on the heat. Place jars and lids in it once it has begun to bubble, but not boil. All you want to do is sterilize the jars and lids, not boil them.
Measure juice into a large pot. Cook over medium-high heat til juice warms. Add sugar all at once, stir constantly until it dissolves. Bring to a boil, add pectin, return to a boil, boil for 1 minute exactly. Take off heat. Skim any foam off top of jam. With tongs remove jar from water pouring out all water inside. Put funnel on top and ladle jam into jar leaving 1/4 inch headspace from top of jar. Wipe rim of jar off with clean rag. Take hot lid out of water and place on top of jar. Add ring and hand tighten. DO NOT use wrench to tighten- hand tight is just fine. Place filled jar into pan with cookie rack in it. Turn heat up on pan so it will begin to boil by the time all the jars are full. Fill remaining jars. Once the pot is full, be sure the water level is at least 1-2 inches above the tops of jars. Bring to a full boil if not already there. Set timer for 5 minutes. Put a couple layers of old towels on the counter top. Remove jars when done on to the towels. Let cool naturally. You will hear a popping sound when they seal and the lid will suck down on to the jar. This will make 7 half pints. Or for your size 14 jars.
Sorry if it sounds like I was dumbing it down for you, I just want you to be successful with your endeavor. Enjoy the jam and let me know if you can use other recipes.