If find the common literature on Descriptive Set theory pretty tough. Is there a gentle recommandation? I would really like to learn this topic on my own, so I am searching for something diguestible where the exercises are not as tough, to make progress and get the ability to read more advanced literature.
Thanks in advance.
I like Chapter 8 in
Cohn, Donald L., Measure theory., Boston, MA: Birkhäuser. ix, 373 p. (1993). ZBL0860.28001.
Intended as a first course in measure theory, aimed at a student with no special knowledge of (logic, foundations, set theory).