For new website optimization...you have todo On-Page & Off-page optimization techniques:
On-Page techniques:
Meta Tags
- Title
- Description
- Keywords
Alt Tags
Canonical Tags
Bold Tags
Heading Tags
Robot.txt
Keyword Density
Keyword Prominence
Deep Link Analysis
Competitor Analysis
Internal Linkage
Off-page optimization:
Directory Submissions
Social Bookmarking
Local Business Listing(Yelp, Yellowpages, Merchant Circle, Yahoo Business Listing)
Social Media
Ads Posting through Classifieds
Video Marketing
Article Marketing
RSS, FeedBurner
Slides Sharing
Forums
Blogs
Profile Linking
Guest Posting