WP is the most popular CMS, an open source and free cms, and also the easiest way for non programmer to build their own website.
If you are an online entrepreneur, or you just want to make your personal online presence, then at least you have to be familiar with this CMS.
You read more about WordPress on their website:
Check on my other WordPress Tutorial Videos:
"Hey It's Bill And Mike, Grab Your 101 Free WordPress Plugins Below"