You really need to add more details to your post. What format is the guide in? What, if anything, have you tried so far? And what distro and desktop environment are you using? I suggest you read the first link in my signature below.
I'm going to hazard a guess that the guide is a pdf file. There are multiple pdf viewers available, from the simple xpdf, to kpdf and okular for kde, and evince for gnome, among others. Try using your package manager/software installer's search function. And of course there's always google!
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