1- When you click on a magazine below it will open up in a pop-up window so if it doesn't display check your pop-up settings.
2- Once the magazine displays just click on a corner of the page to flip the pages.
3- You can zoom the pages if you want.  Simply click on the page when the cursor turns to a magnifying glass.  You can use your scroll wheel on your mouse to zoom in and out.  When the page is zoomed you can click on the arrows on the left and right of the page to flip the pages.
4- If you see a part in an ad that you want more information on or you want to buy it then click on it when it's highlighted and it will take you directly to that companies site or a list of their dealers.  Their site will open in a new page or tab so when you leave it the magazine will still be open, you may just have to click on it at the bottom of your browser to reopen it.
5- When you're finished viewing the magazine just close the pop-up and then just hit the "back" button on your browser to return to the page in the site that you were on before.