It goes "flash" when you press the button. If look into the flash you won't see much afterwards. :bigeyes:
Please be more specific and read your camera manual. If you happen to know the brand and model of your camera, together with a specific question, we might be able to give you more answers. But please don't expect spoonfeeding. Plenty of resources in Internet, plenty of books available. Do yourself a favour and do some homework. Helps much more than just asking as if this forum is your information counter with mind-reading capabilities.