Where can I find down loadable Instuction manuals for various apliances?

Always repaireing Family apliances and at times an instruction manuel would be a great help.Toasters,coffee makers,refrigeraters,computers,you name it an I have fixed them.No it's not my real job it's just that I like to tinker and the whole family know's so I am always fixing something and to look up some kind of instructions would be great.
Thanks's for your time Mr.Vincent