I share Will's reservation about getting good advice from a place that sells plants. Big box stores and groceries with floral departments are NOT nurseries. A nursery that might help you choose well is an independent retailer, not a chain that passes along plants someone else grew.
Get a couple of new plants left in the pots they came in. I prefer plants about 4-5 inch size pot with plant nicely filled in.
We have all had plants die- its a learning process.
