The floaty blue bricks you can hopefully see spread out around the map are what’s known as Pokestops. They tend to be local landmarks like churches and tourist spots and initially came from Niantic’s previous game Ingress. Since launch, these have evolved and you can even apply to get Pokestops authorised. No, asking for your house to be added doesn’t work… We’ve tried. When you get into range of a Pokestop, you’ll get a bit of info on it, a nice picture and, most importantly, a little loot drop of new items.
These will include a selection of much needed Poke Balls, revives, potions, and other special items. As you progress through levels, these rewards will vary more as you unlock better potions and revives. Research tasks will also drop from Pokestops and you’ll even get gifts to send to those on your friends list as a nice postcard reminder of your travels. Or, y’know, your walk to work.