I had to resurrect this topic as the firewood on our winter camping trip caused us headaches. Most of the week it was just me and a female friend. Neither of use have much experience with making fires, let alone chopping wood.
We managed, but only by using heaps and heaps of twigs and branches. Fortunately there were plenty of those because they had had the mother of all storms there recently.
I took my new axe, but we both tried to split a (bought) block of wood and it was impossible. I'm sure that lots of people will say chopping wood with an axe is all about technique but I'm convinced you need a lot more arm muscle than most women have. Especially me!
I hit that block about 25 times, having to put it on the ground to get leverage to pull the axe out each time, and only managed to split a tiny piece off! Really not worth the effort. So we ended up feeding the fire with lots (and I mean LOTS) of twigs and branches and then put the logs on whole, which did work, but lots of effort also.
My friend bought a saw which we ended up using to chop up a fallen tree that was blocking our ocean view.
The trunk turned out to be too green to burn well. But the branches burnt ok.
Anyway, I think I'll go buy one of those wedges and a good hammer and buy some firewood at the servo to practice on! It's quite stressful to not be able to prepare good firewood when it gets dark early and too cold to go without.