viewing pdfs on the mac

I was wondering how do you view a pdf user guides in safari?

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Hello. If you klick a pdf

Hello. If you klick a pdf file in safari, it opens in there. Interact with the content and navigate with VO up and down arrows. (This is the way I have found fastest and most useful, if there is another way, please someone correct me.)

viewing pdf's

What is the best way to open a pdf document? I have tried command O followed by the space bar. This often does not work. Am I doing something wrong?