A list of FAA licensed mechanics and inspectors (IAs) is available.  Arrangements are strictly between the owner and A&P/IA, and costs and obligations between those parties.  FAA licensed mechanics may oversee or assist the owner, or perform needed work. 
You may need a licensed mechanic to do one or all of the following steps:

    1.  Show you how to perform owner-authorized tasks.
    2.  Oversee/supervise tasks that are being done by the owner
         but require the oversight of a licensed mechanic.
    3.  Perform annual inspections
    4.  Perform needed maintenance for the owner.