here, hear, here's hears

Here or here means in this place--
I want them to deliver the pizza here.
It won't get here until 9 o'clock.

Here's is a short, informal form (contraction) of "here is"--
Here's your pizza.
Here's  the number for the pizza place.

Hear or hear means to take in sound and its meaning--
Did you hear the pizza guy ring the bell?
Did you hear something?

Hears or hears is the third person singular ( he, she, it ) form of "hear"--
He always hears the pizza guy first.
He never hears the phone when it rings.

Now that you know that, you can say-
"I can't wait to hear the pizza guy get here."
"Here's the part where he hears the strange sounds in the attic."

Note-- "here! here!" means "there, there" or "tut, tut"--
Here, here, what's all this fuss?
Note # 2-- "hear ye! hear ye!" means pay attention--
Hear ye, hear ye" A proclamation from the mayor...