What do you want most in future lessons?

Video lessons could be cool, it helps beginner's and intermediate levels more efficient when you see and hear things and you can draw and use tables and a such in video lessons so its practically same than "written lesson", but addition with video.

I really like quizzes or some kind of assignment at the end to reinforce what I just learned. Also musical examples to play along with an example helps me remember the concept better.

Good choices - I'll look into these options for you for my future lessons and recommend them to other lesson writers, too. :)

For me i think arranging videos ascendingly from begginer to proffesional so i can understand exactly each stage as each stage depends on the stage that comes before it

We're actually working on that! :) Sorry it's taking so long though! :)