Help with R50 and app

Can someone point me to a video or manual on how to use the Garmin app to make changes to the R50? I've been using the unit for a while now and love it. But I know I'm not using the features correctly. I'm looking for things like deleting and adding downloaded courses, changing the range settings to show multiple ball flights, etc. Is there a place I can go to learn how to do these things? I have the Garmin Connect app, but it only shows I have one downloaded course, but on my R50, I have a lot more than that, so somehow my app is not talking to my unit. Anyway, any help would be appreciated. Thanks!