If you have to ask, then you shouldn't go that route (just yet).
There are enough videos on youtube to introduce you to much of what you need to know about IM. You say "advanced" techniques but IM is such a wide field - which techniques are you needing help with? Not knowing will cost you more than you are willing or able to afford.
It seems to me that you have not considered outsourcing these "advanced" tasks out. Maybe in this manner you will learn what you need tin order to advance to your desired level or at least to be able to seek and afford advanced consulting services.
You should know enough about your own need to be able to identify the exact skill-set you need your "consultant" to possess in order to be of any real help to you. Then the question will be yours to answer, "how much will that be worth to you?" Because consultants come in many shapes and sizes and they charge in similarly diverse rates.