• Domain: Before you pick a domain name you should know your target audience, and what you intend to sell to them. Try to use major keywords in your domain. Using a .com version of a URL is better than other versions.
• Contact page: Design a contact page and put your E-mail and mail address with phone number.
• FAQ: design a Frequently Asked Question page. I think each website needs a FAQ page, but it depends to you.
• About Us: It is necessary everyone visits your website knows who are you, so design an About Us page.
• Privacy Policy page: I remember the first page of my website that has indexed in Yahoo was the privacy page.
• Robots.txt file: With robots.txt file you can limit access of search engines to your website.
• Site map page: Whit site map visitor and search engine can browse your pages easily.
• 404 error page: Create a 404 error page