A histogram may be useful for reviewing an image taken with flash, but it would be no use before an exposure where flash will be used.
A histogram is just a guide to the tonal spread, like your cameras meter it is only a reading and doesn't necessarily know that a dark or bright subject is supposed to be rendered black or white, so slavishly following a histogram isn't always entirely helpful or useful.
Unless your LCD brightness is waaaay out it should be apparent from the image review if an image is badly burned out or badly underexposed.
If in doubt use bracketing and shoot RAW, this gives you a choice of exposures around what the camera deems to be correct, and if your chosen shot is out you can usually attempt a decent recovery via RAW conversion. This is more time consuming for now, but it will help you learn how your camera will see certain situations. If you shoot RAW & JPEG then you can chuck away the RAWs for the good iamges and just use the RAWs to salvage ones you aren't happy with.