around 60MPH in right lane and don't worry about slowing others down...that's what the right lane is for. On a two lane road, pull over and let others pass when it's safe and there are 5 or more vehicles behind you.
Leave plenty of stopping room from the vehicle in front of you.
Gear down on hills to save wear on the engine and trans. And gear down when going downhill to save your brakes.
Be a defensive driver...no distractions...know where you are going or let a navigation system guide you. Don't try to look at your map or map app on your phone while driving.. No texting or talking on a cellphone, even if it is hands free.