Thanks for a great bug report. It was really easy to understand the problem. It looks like I fixed it. Let me know if I didn't.

The lessons have unique numbers, but we don't show them on the page. However, you can see them in the url, like so:

http://www.guitartricks.com/lesson.php?input=1003

This will take you to lesson #1003.

The numbers shown on the page just are there to let you know that there are 25 per page. Since different people author in different styles/categories at different times, there isn't a logical "Rock Lesson #302" scheme. Although that is an interesting idea........

Jon