HOW TO put sequential page numbers on any kind of document!?

I
am having a terribly difficult time trying to figure out how to put
sequential page numbers on any kind of document. for example: I have a
29 page document and the only thing I have been able to do is put in
one number at a time. Could somebody please tell me how to put in
sequential numbers for example one through 29 in the lower right-hand
corner. Sincerely, EVA