I need an excel expert

Hello. My name is Blair. I am an Event Coordinator at the Devner based company Event Travel Management, a division of Corporate Travel Management, North America. I am looking for a 'tutor' of sorts. We have 8 to 10 people in my office who would like a refresher course in Excel. We don't have an outline of points to touch on, but we collectively think we would benefit most from an intermediate to advanced refresher course. We each work on excel in a number of capacities including lists of names/rooms/contacts, as well as some low to mid level formulaic sheets. Would I be able to hire a single person to help us comb through some of the topics and questions we may have? Would you be able to send someone to our office? Just trying to get an idea of how it would work. Thank you and kind regards, Blair Dickerson