Free food is good.

Step 1: Volunteer for things.
Step 2: Have friends.
Step 3: For an entire day, neither cook, nor eat leftovers, nor pay for an incredible slice of spinach and artichoke pizza from this place (largely because you were told it wasn't cash-only, but it was, so in apology your friend despite your protestations paid for your slice).
Step 4: Profit.