How to pay with bits?

So, let me get this straight. You're telling me that I can use these 'bits' to make payments? But how exactly does it work? Do I need a special app or wallet? Can I use it at any store or only certain ones? And how do I know how much a transaction will cost in bits? I'm curious about the process from start to finish. Can you walk me through it, step by step? And are there any fees involved that I should be aware of? I'm excited about the potential of using bits for payments, but I want to make sure I understand it fully before diving in.