Originally Posted by: sohoguitarHowever, when I arrived at learning the Pentatonic scales, there is no video. What's going on? I had the impression all the lessons will have video.[/quote]
Some lessons have video, some don't. If you want an exercise for pentatonic scales try this tutorial which does have videos:
http://www.guitartricks.com/tutorial.php?input=185
[QUOTE=sohoguitar]
What I had to go through were lots of numbers. I tried, but still don't understand what the heck the instructor was trying to explain.
Can someone help pls?

In those lessons I am showing you - by means of fretboard images and the text - how to visualize pentatonic scales. And more: to use them to better visualize any scale across the entire fretboard.

Furthermore, if you type "pentatonic" into the search engine for the site you will get lots of other lessons you might be interested in:
http://www.guitartricks.com/search.php?input=pentatonic

Hope this helps. :)