Virtual Assistant

I am a psychotherapist in an individual private practice. I am looking for help with administrative tasks related to my work - billing, scheduling, some editing; as well as handling personal tasks of mine such as shopping, booking hotels/flights, organizing data. Prior experience with personal assistant work is helpful, but not required. I will be particular in showing you how I want things to be done. English proficiency required. Basic familiarity with Word/Excel.
Will be around 10-15 hours per week, depending on the need. Though $50 a week is the base pay, even if you happen to work less than 10 hours. I am on EST timezone.