I have a few seo questions pertaining to keywords:

  1. Does anyone know of a tool that I could use that could help me determine or recommend the best keywords I should use?
  2. Should I add keywords to the title of each page? If so, how many keywords or characters should I use?
  3. I already have metatags on each webpage. However, I have come across many sites that include keyword tags at the bottom of each page. Does this offer any seo benefits and should I consider adding tags on my pages?