I started this course because I am super interested in learning to dj. But as I am traveling I can't have an equipment with me. This is defenetly an interesting course. 

I learned how to "read" the song structure and the principles of mixing songs. 
Also had a lot of fun and confidence to buy my first equipment when back home. 

If you have to travel super light you can also use the App as I did sometime also it can be frustrating to click the right things at the right time.