And while you're at it studying the link @andreas_lds gave you, I advise you to use the navigation pane on the left to see the wealth of functions (see Maxim 9) that SAS provides. You'll also find statements, formats, procedures and whatnot. I know it's a little like reading a phone book, but the more you scan through this, the more you get a feeling for what is there and where it can be found, and that is the gist of Maxim 1.
I also advise you to scroll down to "Learn SAS Programming", and study the "SAS Language Reference: Concepts" there. You'll get a much clearer picture of how the whole thing works, and many questions you have or will have are answered there.
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