R.R.
Don't lose your "window of opportunity," I can't stress that enough. (My guy's was 19-21 months, I saw it but our laid back pediatrician said to set a potty out would cause him stress, so when we started training at 22 months he wanted no part of it.)
Let her go without diapers except for naps and bedtime, keep the potty in the room she's spending most of her time, and sit her at set times each day until you discover her schedule. Start every 20 minutes and gradually increase the time once you know how often she'll need to go. Keep your eyes and ears pealed to know when she's about to go and get her there so she can associate the feelings with going to the potty. Also let her see you using the toilet so she learns what to do from pulling her pants down to sitting to wiping to washing her hands.