Suggestion: Add section to courses

[Astapor]

Hi,
I noticed that the courses you posted doesn't have sections or categories, they are just all-in-one folders.
Could you group them by sections like for the course Python:

Section 1: Primitive types
Section 2: Non-primitive types

and etc

This is just a suggestion, I really appreciate your effort and time in uploading these courses, it helped me a lot!