Hi Tony,
Not sure what field of work your looking for, but remember these tips:
1. 1st impressions count, so dress smart, look presentable, be early for
that interview.
2. Research the job your applying for, even if its packing shelves,
washing dishes. Eg, ask lots of questions. I've interviewed a few
people in my time and always found the ones asking questions about
the role have a good chance of getting it - if anything, they're
showing interest.
3. Avoid asking about pay if u can help it.
4. If you can remember at the end and if they ask you if there are any
questions, try not to reply with just a 'no'. If anything ask some more,
or respond with. I think we've covered everything, however, would it
be ok to call back if something comes to mind.
I know some of the above may sound a little old fashion (hey I'm GenX), but I think they still stand the test of time.
Good luck mate.

norm