As your driving be looking at the addresses/streets, see which side the odds/evens are, if there going up or down, and if the package is in the cab check the address to see the house before you pull up. If you do this youll find that the time flys by and when you know what your doing the job is more enjoyable.
Im not agreeing with the "sit down shut up" but the sit down is important, learn to put your seatbelt on quicky and consistently. The shut up part can go either way. You can have a driver that wants to be a chatty cathy or a driver that doesnt, just remember that drivers are out there all year by themselves they arent used to having someone with them, youll see.
Youll be fine just be on time and ready to work.