Part 1: Traversable wormholes.- 1. Introduction (Francisco Lobo).- 2. Wormhole basics (Francisco Lobo).- 3. Rotating wormholes (Jutta Kunz).- 4. Astrophysical signatures of thin accretion disks in wormhole spacetimes (Tiberiu Harko, Zoltan Kovacs, Francisco Lobo).- 5. Wormholes in modified theories of gravity (Sergey Sushkov).- 6. Trapped ghosts as sources for wormholes (Kirill Bronnikov).- 7. Geons in modified gravity (Gonzalo Olmo, Diego Rubeira-Garcia).- Part 2: Energy conditions.- 1. Quantum inequalities (Christopher Fewster).- 2. Semi-classical and nonlinear energy conditions (Prado Martнn-Moruno, Matt Visser).- Part 3: Warp drive.- 1. Warp drive basics (Miguel Alcubierre).- 2. Probing faster than light travel and Chronology Protection with superluminal warp drives (Carlos Barcelo, Stefano Liberati).- Part 4: Closed time-like curves.- 1. Time machine basics (Francisco Lobo).- Part 5: Conclusion (Francisco Lobo).
