If you’re building your own website, or even just planning to, odds are you’ve considered WordPress as a foundation. After all, 29% of all sites are built with WordPress, and nearly 60% of all sites use WordPress as their CMS. There’s a reason that’s true, but you won’t fully understand it unless you master the format with the WordPress Essentials Lifetime Bundle, a series of online classes that are currently on sale for less than $20.

The four included courses have more than 20 hours of content and will teach you WordPress skills that go way beyond just setting up a blog. You’ll learn how to effectively write copy, use basic programming for marketers, and customize your site with web development techniques. 

Next, you’ll learn how to drive visitors to your site with SEO techniques and how to understand the traffic with web analytics. You’ll master the hard stuff (organizing, designing, and structuring your website, focusing on audience needs) and the fun stuff (masterminding your social media presence).

This is a lot of information — $880 worth — available in the Mashable Shop for just $19 — that’s 97% off.