Singular (this & that)
This is used to point at something close to you (this es esto / esta)
This is my laptop (I am touching it)
This radio does not work.
That is used to point at something far from you (that es eso / esa)
That jacket is not mine.
That is the best book I have read.
Plural (These / Those)
These (estos - estas) is the plural of this and it is used for close objects or people which are close
These are my favorite shoes.
These books are very old.
Those (esos - esas) is the plural of that and it is used for close objects or people which are far
Those are not my socks.
Those pictures are excellent.