39. Resources: from Google
• Google Webmaster Central
• How Search Works
• SEO Starter Guide (PDF)
• First Steps Cheat Sheet (PDF)
• Google-friendly sites
• Webmaster Academy
• Building Mobile-Optimized Websites
• Schema.org (rich snippets)
40. Resources: Books
• Don't make me think (classic)
• Mobile First
• Mobile Search Moments (presentation)
• Responsive Web Design (tools)