He did not do much ruling during his lifetime. Since he was
always on campaign and conquering new countries, he left the ruling
of his homeland Macedonia to his general Antipater, who made a
decent job of it. In all those other countries he never stopped to
rule them himself but appointed Satrapes, a sort of Governors, whom
he had killed if it was pointed out to him that anyone of them made
a mess of it or when any of them rebelled against him. In the
places where he did stay a little longer he was usually only eager
to adopt the customs that treated the king as a god and dress in
the local costumes if appropriately rich and flowing in design.
So as a ruler he was mostly the "off with his head"-type and
made not much of a mark. He almost totally focused on being a
military commander and was very succesful at that.