Most computers have Adobe Reader already installed. I'm going to assume you have a version of Windows on your computer. If you have a Mac, ignore the following and ask this question again, specifying you have a Mac so a Mac user can help. I've been a Windows gal since 1992 and know nothing about Apple products.
As for finding the recipes, just put the disc into the computer's DVD drive while pressing the shift key so it does *not* auto-start. If it does start, the menu on the DVD will have a link to the recipes but it only tells you to put the disc in the computer and doesn't open the file. Turn the DVD off but leave it in the disc drive.
Then go to Windows Explorer, find the drive and folder the dvd is in (on mine it's the D: drive, may be different on yours), and when you click on the folder on the left side of the screen, in that folder on the left you'll see 2 sub-folders appear. Ignore those and look on the right hand side of the window where you'll see folders and a lone file called burgers_fries. The .pdf may or may not appear, depending on your own computer's settings.
Double click on that file and the PDF file should open right up.
If you *don't* have a program on your computer that reads them, you'll be given an error message and I *think* a link to where you can download Adobe Acrobat Reader. Just follow the directions to download and install, or come back here first and tell us exactly what error you get and someone can walk you through it step by step.