So my new years resolution for 2012 was to learn to bake. Nothing too complicated, I'll be staying away from things that require 'folding' or 'peaks'

but I've got a good few things I'd like to try.
My problem is that it's difficult to work out how to bake for one. I made a chocolate biscuit cake yesterday (from the Odlums site) which worked out quite well, but now I've got 2 pounds of chocolate cake to eat. I can fob some of it off on friends, and I'll be eating a good bit myself, but I suspect a lot of it may end up in the compost heap.
I was thinking about just halving all ingredients, and making a more manageable amount, but I'm not sure that always works especially after reading this
Baking, unlike cooking, is a science, there are chemical equations, precise measurements and timings, so really the best advice is normally to follow the recipe
Is there any way of monkeying successfully with the recipe in order to bring the batch size down? Is freezing an option? How long will cake keep?
My next project will be next month and will probably be cookies from the cooking club section but even then 8-10 cookies might be a bit much. Any thoughts?