My first design for the Web site

I created this design by using Dreamweaver and Photoshop. I learnt how to slice up the image and hot to link it to other sites but I still don't know how to for example go back to the previous page etc. I am not sure if there has to be a button to take you to previous site or if someone clicks on "show the previous page" it will automatically appear. Anyhow this is the design:

And this is how I sliced the web by using these images as examples:

Also, these is another drawing I have done which I may use for my web (maybe instead of the sudoku game)