Some aspects of flux compactifications

Abstract: In these lectures I will briefly describe the formalism of Generalised Complex Geometry and how it provides a useful framework to analyse formal aspects of flux compactifications. In particular GCG allows to generalise what is knwon for CY compactifications to the flux ones. Rather than entering in the details, I will try to discuss what it is known and what is still an open problem. Finally I will give an overview of the compact flux backgrounds presently known.