Quoted By:
Kunen is a better grad set theory book. Jech is a reference and survery book, I mean working through it is good for breadth. But once you've worked through Kunen, i.e. know forcing. You start to specialize, maybe descriptive set theory (Moschavakis, Kechris, Gao), large cardinal structure (Kanamori), or more model and recursion theory stuff (Barwise, Devlin).
