I have hot water coming out of house taps but not from out of the shower, we do not have a bath tub. there seems to be no obvious leaks. HELP! what can i do i have 4 stinky kids that badly need a shower

The tap fitting on the shower may have failed. Some of the modern fittings have a more complicated internal mechanism than the traditional taps and can fail rendering the tap inoperable. Turn off the water at the mains. First take off the tap handle and then with a spanner carefully unwind the tap spindle. Be very carefull not to use excessive force in case you damage the pipework behind. If it does not come ralatively easily leave it for someone else. When you have this out have someone crack the main valve and you should have hot water coming out. If the fitting itself is the problem you may be able to take the spindle and washer out of a standard brass garden tap and use it as a temporary fix untill you get a propper replacement. Just another thought, you may have an isolation valve on the hot water line to the bathroom. Could a kid have turned it off?