Hilbert Class Field for pure cubic fields I am new to class field theory, I want to study Hilbert class field for pure cubic fields. Which is the good source? Thank you in advance. 
 A: I don't know any particular source for this.
But if you look at part (i) of Thm.~1.3 of
this paper it has a
result about the $3$-part of the class group (and hence the Hilbert class field),
not for $\mathbb Q(N^{1/3})$, but for the closely related field $\mathbb Q(\sqrt{-3},N^{1/3})$ (where $N$ is a prime satisfying a certain congruence 
condition).
This paper follows
up on the previous one, and proves additional results about the $3$-part of pure cubic fields.
The second paper in particular has some other citations about these sorts of problems
in its bibliography.  Both papers are fairly recent (about 10 years old), 
so taken together they may give you at least some sense of the state of the art.

[Side note: the methods of the second paper are pure algebraic number theory.  The methods of the first paper are quite a bit more involved; they depend on the theory
of deformations of Galois representations that Wiles developed for his proof of FLT.  So you may want to look at just the statements of the theorems in the first paper,
but not the proofs, while in the second paper (and in some of the other papers it cites) it may be more realistic to try to understand the arguments as well.]
