Don't panic, because you can do it on the stove.
Step 1: Heat the Oil
Make sure the pan is rather large, so as your corn pops there will be room for it to expand.
Place on the stove on medium heat, covered. Wait for all three kernels to pop (you should be able to hear it.).
Step 2: Add Popcorn
I used 2/3 cup of popcorn. But more or less could be done. Just don't overfill the pan so much that you have kernels that can't touch the bottom.
Step 3: Shake
I found that taking a dish drying towel and putting it on top of the pan so that it covers both handles and the knob on the lid helps with this, because if you keep the towel tight enough you can lightly shake it without worrying if the lid is going to come off.
Be careful. There is hot oil in the pan and you don't want to get burned accidentally.
I don't recommend opening the pan while it's popping, or you might get popcorn all over your stove.
Step 4: Serve
Top with melted butter and salt, or maybe parmesan cheese and rosemary, and you have a beautiful bowl of popcorn for your next movie night or snack attack.