How to retrieve geo-locations from a store and draw them on Google Map

Dear friends,



I have a store(myStore) which has a list of geo-locations. On one of my screeens in my app, it's a Google Map.



Now what I want to do is : to draw circles according to the geo-locations which are in myStore onto the Google Map.



Questions:

1. how to retrieve those geo-locations from myStore.

2. what map event/listener do I need to use in order to draw those locations.

3. how and where to add those Google Map events/listeners



I highly appreciate any input.



Thank you