I am trying to make a new app with maps

I have used this tutorial to start off:http://ai2.appinventor.mit.edu/?locale=en&repo=http://appinventor.mit.edu/yrtoolkit/yr/aiaFiles/map_the_movement/MapTheMovementTemplate.asc

My goal is to achieve an app where you can see the world map and zoom in and out. I want it to have list of countries i've visited and the countries would be colored in a color. I hope someone would want to help me show me steps i have to do to be able to achieve that goal.
Thank you

Maybe this might help


thank you sooooo! much.