1. Pop in a video game while you wash your shirts on cold.
Wash your shirts on cold or warm. I wont bore you with the details for why that matters because you've got games to play while the cycle is going.
2. When you take off a shirt after use, pull it off from the bottom up so it comes off inside out.
This will save you a step because you will want to wash them inside out. Inside out washing protects the design, if you care about that sort of thing.
3. Keep the darks and light shirts piled on your floor separate.
So when you go to actually wash them you can quickly throw them in as one pile and not contaminate them with non-matching colors. One less step means more Mario Kart time.
4. Skip the bleach.
Again, it's just one more step that is not necessary and the harshness will hurt the fabric and design of the graphic tee. Steer clear.
5. Hang the shirts right after they are tumble dried on low heat to bypass ironing.
This is the final part. If you hang your shirts immediately after they are finished drying, chances are they will stay pretty well wrinkle free and you get to skip having to iron them. That's a good thing because you don't own an iron anyway.