Step 1: Go to the IBM Quantum Experience website. Read up.
Step 2: Click here to go to the invitation request form. Tell IBM who you are and why you want to use its quantum processor, which it just opened to the public. Don’t lie, but maybe try to make yourself sound like a non-evil genius.
Step 3: Wait for your invitation to arrive.
Step 4: ???
Step 5: World domination.