Adding graphics

[ashton0603]

I shouldn't be saying this as long as I have been around, but I am still new at this.

I would like to add graphics to my site. I am just not sure what they are called...or the correct name. Can someone please tell me what these are called and where I can get them?

I have a sample site:
osc.template-help.com/zencart_12548/index.php

I was considering purchasing a template but...they don't have them for the version that I want...and they are pricey. I have been doing a lot of work on my site but need a new look.

I like how this site has the "fresh flowers" & toys and games sections. ARe these called buttons....graphics....images?

osc.template-help.com/zencart_10226/index.php

this site also has the categories at the top that link to certain pages. It also has a free shipping...button, graphic...

What are these called?
Can I go to a site and get generic or custom ones done?
Does anyone know exactly where to go if yes?
Does anyone know the code to create something like this if no?

I have just been trying to get something like this for a while and just can't figure out what it is they are doing to get it to have that "pop up" "animated" look to it.

Thanks