Im looking for good tutorials on how to make a dll/ocx

I have lots of functions that i made and would like to put them into a dll/ocx or something so that i can use them without having to add my modules to every program i make, does anyone know of any really good tutorials??

Ive been scouring the net, but keep seeming to d/l dll's without the info on how to make them.

Thanks in advance, a fairly good programmer,but still a relative newbie

mick