Here is an article with tips from dads who have been in the labour ward:
http://www.babycentre.co.uk/a1072/dads-10-ways-to-be-the-perfect-birth-partner
Basically, it is mostly about getting information such as knowing what your wife wants and knowing what to expect.
And here’s a useful cheat sheet on information of the labour process that you should know:
http://www.babycenter.com/0_a-childbirth-cheat-sheet-for-dads-to-be_8244.bc
Hope these help!
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