People make money via the advertisement shown on the youTube, the other way of making money is via affiliate marketing for example you make a movie and characters in movie use Colgate and you charge from Colgate.
Now coming to second part, which is important subscriber or view, answer is it depends on what is your objective. In long run its subscriber and at moment its views. More number of views means more money, more number of subscriber means more future money on future video releases.
