In these forums there are mainly, maybe only, the posts of Ichiro that are worth to be called 'informations about successful marketing strategies'. Search for his posts.
Selling textures and models is another strategy - DEXsoft is the most successful around this forums.

EDIT:
BTW, do yourself a favor and write a signature in your profile settings with a link to your portfolio that people around here are aware of your great artistic skills. That is a first step in gaining awareness, the basic marketing strategy.