I've been building web sites since the mid/late 90's, and am the author of the book WordPress For All : How To Create A Website For Business Or Personal Use, Quickly & Easily - Whatever Your Skill Level. It is available available on Amazon for the Kindle, with a paperback version due to follow in the near future.
I've been using WordPress since it was first released, and prior to that, B2 (the software WordPress was forked from). I've built numerous websites both for myself and for clients, using HTML, WordPress, and Joomla. From the very first commercial web site I built (in the days before Google existed) I have made a point of building my sites with search engine optimisation in mind, and have had top ranking for many of my sites for some of the toughest keywords out there.
I'm a big fan of Twitter, and if you follow me on Twitter then make sure you let me know that you found me on Udemy and I'll be sure to follow you back.