My beautiful IF steel frame has started to show bits of rust on a few areas of chipped paint, the dropouts, and the cable guides.

Two questions:
-can anyone point me to very good how-to web resources on minor paint repair and touch-up? Most of the sites I'm coming across aren't so great, and are either insufficient in detail, or deal with frames that are in advanced state of decay.

-the original paint (and my touchup kit) is a two-colour dealio: base coat is pure white, and finish coat is kind of pearly white. I'm finding most of the general touch-up advice is to apply around five coats or paint to the bare metal. My question: just one base coat, then four applications of pearl topcoat? two of one, three of another? None of the above? All of the above?

Thanks