Here is a must read before going on. “Social Media Marketing Beginner’s Guide”

Productivity

• Mobile Productivity Tools
• GMAIL TOOLBOX: 60+ Tools For Gmail
• ONLINE BUSINESS TOOLBOX: 230+ Tools for Running a Business Online
• 30+ WordPress Plugins To Get More Blog Readers

Interactive Tools to get your customers involved.

• Forums Guide
• ONLINE POLLING TOOLBOX: 40+ Online Polling Sites
• Twitter for Business (Video)
  • Twitter Tools

Marketing your business in the new economy.

• Tools for Running Your WordPress Blog
• ONLINE PRESENTATIONS: 30+ Presentation & Slideshow Services
• FLICKR TOOLBOX: 100+ Tools For Flickr Addicts
• Social marketing vs. social media marketing
• Spread your content

Monitoring your business

• 30+ WordPress Plugins for Statistics
• SEO Step One Of Ten: Keyword Research
• Google Keyword External Tool
  Identify niche relevance and advertising keywords volume and cost by using Google’s own data.
• Measure international and US traffic trends and compare sites against each other.
  • Google Trends for Web Sites
  • Alexa
  • Compete
  • Quantacast
• Find out how effective your web site is without having to get a consultant.
• Test, measure and identify best working ad formats and optimal ad placement solutions.

Great Resources

• Top 25 Marketing & Social Media Blogs
• Web Design Resources
• The Facebook Marketing Bible: 24 Ways to Market Your Brand, Company, Product, or Service Inside Facebook
• 25 Tips for Marketing Your Blog

Do you have anything you would like to add to this list?