How to set "Search Preference" is a main part of every blog because it tells search engine to crawl your blog or not and every new blogger wants to set it also in his blog but he don't know how to set it. There is also some other part which is very necessary to set them like meta tags description, robots.txt file, custom redirects,
customize your error pages, add image and header tags and
even add the "no follow" attribute to the links. Here i am going tell you how to set it. 
Below are some help links which help you how to use each of these new features:
- Search Description
- Custom robots header tags
- Custom Page Not Found
- Custom Redirects
- Image properties
- rel='nofollow'
