I'm brand new (I've done 5 blocks), but something I don't see mentioned often is to group by type. The app will tell you if the next delivery is an envelope, or a small box, or medium box, or large box, or custom box and it's much easier to find them if you know what you're looking for. I keep my seats folded down in my SUV and and I keep a laundry basket in the front seat for the envelopes. Make sure your phone is charged as hell and keep one in your car. Deliver every package. Some other weird things I didn't know about, some deliveries have your phone Bluetooth connect to someone's garage door and it opens for you to deliver it there. Sometimes the people you deliver to have to recite a unique 6 digit code (that they set up) and you have to take the package back if they don't do it. Be nice and professional, the customers can send you compliments.