Books on Group Theory. I am looking for a book/note that has a good collection of advance results,theorems on finite group theory.
By advance, I mean theorems after Sylow,Lagranges(I am considering theorems of Sylow,Lagrange as basic which  are available in any text of group theory).

I recommend you "A COURSE ON GROUP THEORY" by John S. Rose. You can find it here. Unfortunately, it is not well written, however it contains plenty of results. Moreover, it is not introductory and  it focuses on the notion of group actions on sets and on groups, see Burnside Theorem and else. (I don' t know if you can find it free in online form)
