Hi there,
As you advance in the Core Learning System, you'll be introduced to more advanced strumming techniques and concepts.
Check out this strumming tutorial from Rock Level 2: https://www.guitartricks.com/lesson.php?input=21142&s_id=1692
Anders will show you eight note strum patterns, sixteenth note patterns and more.
In this level 2 Country course, Anders will show you different variations of your right hand strum technique, ghost notes and other skills: https://www.guitartricks.com/lesson.php?input=27996&s_id=2354
Remember, you can always use the search function located at the top right of the page to search for topics and lessons.