Use " these" for plural nouns which are close to you ..and use " those" for plural nouns which are away. Suppose that you are carrying some books so you can say : These are my books. If you have your books putting on a table which is away from you then you can describe them saying : Those are my books. I hope that it is helpful for you.

These things here. Those things there. It's as simple as that. ^_^

Those plural form of that. Those refer to a people or things or events that you can see but are not close to you. These plural form of this used to refer things people and event that are near to you.