Step 5: Finished/dirty hands
Put the logs in the sun to dry. It depends on the weather how long they'll take to dry. The logs I made for this instructable dried in one day. But it was a hot day (30c/86f). If you're making them in cool weather it could take two weeks if there's no sun.
Update, 10th November 2008: I have mentioned in the comments section that once the fire season starts you can get your logs dry within a few days by stacking them on top of the wood heater or in front of an open fire. There is a photo in the comments.
If the weather is lousy, but you haven't yet had any fires you can make use of a well aired spot. If you keep your firewood under cover, it would also be a good place to dry your paper logs. In cool cloudy weather I make a space for the logs to sit for as long as it takes. I put an old screen door on some boxes and use that as a drying rack. Air can get to the logs from underneath. Any area that gets the wind but is protected from the rain will do fine if you can afford to wait a couple of weeks for them to dry.
It's surprising how hard they are when they're dry. If you tap yourself on the head with one, you'll see what I mean.
You really need to make a whole lot of them before winter. Otherwise it will be too cloudy and cold. At the beginning you will probably love making them, so take advantage of this and make as many as you can. After a while your enthusiasm will wear off and it will turn into a chore especially if you're out in the cold and your hands are freezing while you play around with cold wet newspaper.
But anyway... good luck if you decide to make them. Your firewood will last a lot longer.