Buy something in-store (coffee, hot chocolate, snack, etc.) and pay with the Starbucks app.
Do this by adding funds to your app by clicking the "Pay" button at the top, then pay with those funds in-store.
Here is a brief video tutorial.
Your account will be automatically upgraded to "Gold level" for one year.
Once upgraded to Gold, check for a Gold card within the "Pay" section of the app.
You can transfer funds to your Gold card, and get perks like free refills during your same in-store visit.
Earn 2 stars for every $1 you spent.
Earn a free sandwich (or any food/drink item) for each 125 stars you earn.
Sandwiches normally sell for about $5 to $7.
If you buy one Starbucks coffee about twice a week, Gold will earn you a free sandwich about once every 3 months.
Free refills of hot or iced brewed coffee and tea during a single in-store visit.
If you earn at least 300 stars within a year from now, you will keep Gold Status for the next year.
Enter your zipcode or city, click "Shop Now", and enter promo code SAVE in the middle-right.
Browse the restaurants, and read their terms carefully.
Most certificates require a minimum purchase, are for dine-in only, or at least 2 people at your table.
Most certificates can be used toward alcohol (unless stated otherwise in the description).