[pdebruic]

Hire some writers to make your help docs and how-to guides more robust. That content can last forever and boosts your page rank plus eases customer retention/acquisition (at least while its still accurate to your implementation) but the ppc ad investments only last until the money is spent. Also get those articles translated into some languages as the non-English world is under served.

Run many ad tests but spend small amounts (less than $50) each time while you learn how to do it (analytics, AB tests) and what works (platform, content, offerings) and what changes help.