If you have a fireplace or a wood-burning stove, splitting your own firewood is a great skill to learn. This video demonstrates tips and tricks for splitting logs, as well as how to safely use the tools.
The blog Art of Manliness explains the main keys to properly splitting logs. You'll want to use a splitting maul instead of an axe, because a maul won't stick, and its shape increases the outward pressure on the wood making it split easier. For tougher logs, a wedge and sledgehammer will do the trick. Look for splits and cracks in the log and use them as a guide to make splitting easier.
It's also important to hold the maul properly by grabbing the base of the handle with one hand and the top of the handle with the other. Take aim and give it a quick swing. Buying firewood can be expensive, so learning how to split your own might save you a few bucks.
How to Split Wood [The Art of Manliness]