Question: If one were to fully understand 10 theorems in DST, or 15,20,25,30 theorems, which ones would be the most important to understand in order to work towards an understanding of descriptive set theory (viewed from the boldface side of things)? Specifically, I mean theorems which are in Kechris, Moschovakis, Srivastava. I know that a lot of knowledge goes into understanding the "big theorems" and this will have to be obtained in the journey.
My point: I'm working through Kechris and would like some sort of guide posts to help me know where I am in the subject. I would like the theorems to be from these books and not any theorems from current literature.
Also, are there any books that can help me in the subject besides the 3 I mentioned above?