When you need to get a prescription filled, you’ll need to go to the Apotheke, not the Drogerie. Watch out for the pronunciation! The German th should be said like a t.
Shopping in a German Supermarkt is different from shopping in the US! You need to pay if you want to use an Einkaufswagen or the store’s Tüten. Plus, the person who rings you up at the Kasse won’t bag your items — you’ll have to do the work yourself!