“How Lightsabers Work”
This is a public service announcement brought to you by the Jedi Council for Safe Lightsaber Handling:
There are two ends to any lightsaber — one end has the belt ring, while the other end houses the blade arc tip and blade emitter. NEVER point the blade emitter of a lightsaber toward your own body. NEVER look down the “barrel” of a lightsaber, even if you are “sure” it is in safe mode. If you accidentally activate the lightsaber, serious injury could result.
This and a lot more await you at the link above. Consider yourself warned.