Recently I made marmalade for the first time ever and it was easy, but took quite a bit longer than berry jam. I used the recipe for the citrus marmalade from an awesome cookbook -- Food in Jars.
Of course, it would have been even easier if the power didn't go out just as I was about to start the canning part of the marmalade making. Canning by candlelight was a bit stressful, but made me feel all old-timey. And the marmalade came out fine in the end with all the jars sealing properly.
I have to say that it is delicious on chocolate chip scones and I thought it was quite tasty on the jam thumbprint cookies I made this week.