Unless your time is worth more than triple the going rate for a good iOS programmer on oDesk (>$25), you should spend some time (hours, not months) learning the

Unless your time is worth more than triple the going rate for a good iOS programmer on oDesk (>$25), you should spend some time (hours, not months) learning the basic fundamentals of programming for iOS, even if you don't know anything yet. Without that knowledge, your contractors will put out something far worse than what you want, simply because you don't know how to ask for it in language they understand. It'll also take much longer for them to complete it, and cost you a lot more. Better to pay them to clean up your errors as you make them than for you to pay someone else to clean theirs up.