This is exactly what happens to every Oregonian. For most it's taking a car to college out of state.
At the risk of sounding a bit mean, it’s very easy to figure out. Most gas stations have screens that say “insert card, select gas”.
I don’t understand how anyone struggles with that.
I'm having a memory of trying to pump the gas for my dad when I was a kid. I got confused about what to do, so after completely filling up, I ended up swiping the credit card again after finishing the purchase, leaving the machine open to being charged again. My dad stood there and yelled at me, and the whole time I thought, I don't know what I did, so when he's done yelling I'll just gonna go ask the attendant.