1 Introduction

2 Skew characteristic polynomials of oriented graphs

3 Some basic properties and integral formulas

4 Skew equienergetic oriented graphs

5 Graphs with Sps(Gσ)=iSp(G)

6 General bounds for the skew energy

7 Skew-spectra and skew energies of various products of graphs
7.1 The orientation of H⊥G
7.2 The orientation of H⊗G
7.3 The orientation of H*G
7.4 The orientation of H[G]

8 Extremal oriented graphs in some graph classes

9 The skew energy of random oriented graphs

10 Skew Randić energy of oriented graphs

11 Skew Laplacian energy of oriented graphs