That's totally understandable - there are a lot of videos! Depending on what you're looking for there are a couple ways you can do this. If you're looking to follow the weekly plan, you can always click the ness logo in the top left corner of the platform. That will bring you back to the basic home screen and the weekly plan is always featured there (either as the first or second collection). If you want to search by teacher, the best way to do that is just use the search tool at the top. It will pull up all the videos available for the instructor that you searched. One thing that I find super helpful is adding videos that I want to do to "My List". That way you can save things the ones you're interested in in one place for you to always reference.
I hope this helps! Let us know if you have any other questions!