how can i make exacly like pic below that when you klick on of the pic the prouct page like pic 2 will open and then when you choose a product he page like third pic open and show th product details.that's exacly like this or better.
imgur.com/CwTvnzg
imgur.com/MxJdTJp
imgur.com/tY7L6Et

Your question is not specific and it's difficult to understand what you want to achieve with your K2 site based on the attached images.

Maybe you can explain further?

that is my old site. I want to redesign it myself I do all the thing in my website but not this one. I want to make a page like pic 1 when I choose each pic on the page the especial page open and show page like pic 2 and when I choose one of the product and click on it show page 3. that’s it. how can I make these 3 pages like those pic .

This is too much of a generic question,
You have to override the templates of K2 and style them like your old site.

More on overriding can be found here: getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates