There are several sites claiming to be useful, and Google started giving many useless sites against queries. It's time to build a list of really useful sites, and save tons of time searching the net:
http://www.webconfs.com/htaccess-redirect-generator.php
There are several resources, explaining CNAME, but this is very good!
http://content.websitegear.com/article/subdomain_setup.htm
Calculator for FB likes:
http://www.hscripts.com/tools/FBLike/index.php
Twitter Like button: You can create twitter Like/Share button using the following URL:
https://twitter.com/about/resources/buttons#tweet
Google +1 link:
https://developers.google.com/+/plugins/+1button/
The above URL provides +1 button code for placing on your web page.
Reddit web page for CertExams.com:
https://www.reddit.com/r/certexams/
https://certforums.wordpress.com/2021/11/18/learning-and-assessment-software-laas/