First I figured out rolling over, and that was mostly effective, but rather dizzying. Then, my mama's showed me how I could move forward by using my hand and feet. It was really, really hard, but when I got the hang of it I just couldn't stop. Suddenly, the world had opened up to me.
The best part about my newly-acquired skill? Now, no matter where my pacifier flies when I accidentally toss it, I can retrieve it again. What a relief.