How does lightning work?

So lighting is electricity, which is made out of tiny particles. Some particles have a positive charge and some have a negative charge. If there is a big storm, it would pull the negative and positive charges away from each other. Then they would pull back together like magnets and make lighting. But how would the charges connect from the clouds to the ground? Well I will tell you how. The negative particles go from the clouds towards the ground and that is called a Stepped leader. Mean while positive charges are moving from the ground connecting up to the negative charges, this is call an upward leader. When they connect it makes a lighting strike from a tall building (Most likly would be a tall builder) all the way to the lighting cloud. So overall lighting is made from negative Cloud particles are connected to positive ground particles.