Marketing: I'm a complete noob in this area, so any advice or links to resources is appreciated! Concerning SEO, I found some related keywords ("online english

Marketing: I'm a complete noob in this area, so any advice or links to resources is appreciated! Concerning SEO, I found some related keywords ("online english editing", etc). Is it worth tweaking the copy to include them? Should I buy traffic? If so, is Google the way to go or should I consider other search engines or ad networks? Also, many of you have experience optimizing landing pages. Are there any easy wins that I'm missing?