Where would you look for a coach
How would you find out if he was a good coach
How much would it cost
and is a good idea to do prior to getting a coach imo (because you'll be able to get that much more from a coach if &/or when you do decide to get one).I don't know what stakes you are playing but unless you are playing mid stakes or higher, you might consider looking at using a training site like DTB or Deuces Cracked. It will be a lot cheaper and if what you need is fundamentals, a great training video series can cover that very well at a fraction of the cost.