Here are some of the useful internet resource links for you.
Google Webmaster Tools provides you with detailed reports about your pages' visibility on Google
Bing Webmaster Tools and improve your site's performance in search. Get access to free reports, tools and resources.
Discover the website's whois information such as DNS record, IP Address, Name Servers, Website Registrar, Email Id, History, Website Thumbnails, and much more.
Open Site Explorer is Moz's Search Engine for Links. Perform competitive link research, explore backlinks, anchor text, and more for free.
Searchable people-reviewed web directory categorized by language, subject and location. Edited and run by volunteers, supported by AOL