Quantum thermodynamics is an emerging field aiming to extend standard thermodynamics and non-equilibrium statistical physics to small systems and quantum effects. It involves interdisciplinary approaches from statistical physics, many-body theory, mesoscopic physics, and quantum information theory. The field addresses issues like thermalisation, work definitions, and quantum engine efficiency. This overview provides a perspective for postgraduate students and researchers. Key topics include the link between information and thermodynamics, fluctuation theorems, thermalisation, single-shot thermodynamics, and quantum thermal machines. The first law of thermodynamics defines energy changes as work and heat, while the second law introduces entropy and irreversibility. Maxwell's demon and Landauer's principle are central to understanding information thermodynamics. Quantum thermodynamics also explores work from correlations and coherences, and the role of quantum effects in thermal machines. Classical and quantum fluctuation relations are discussed, showing how entropy and work distributions relate to equilibrium processes. Experiments with colloidal particles and single-electron boxes validate these theories. Quantum thermodynamics also examines the thermodynamic cost of information erasure and the role of feedback in thermodynamic processes. The field aims to unify quantum and thermodynamic principles, addressing challenges in nanoscale technologies and understanding quantum fluctuations.Quantum thermodynamics is an emerging field aiming to extend standard thermodynamics and non-equilibrium statistical physics to small systems and quantum effects. It involves interdisciplinary approaches from statistical physics, many-body theory, mesoscopic physics, and quantum information theory. The field addresses issues like thermalisation, work definitions, and quantum engine efficiency. This overview provides a perspective for postgraduate students and researchers. Key topics include the link between information and thermodynamics, fluctuation theorems, thermalisation, single-shot thermodynamics, and quantum thermal machines. The first law of thermodynamics defines energy changes as work and heat, while the second law introduces entropy and irreversibility. Maxwell's demon and Landauer's principle are central to understanding information thermodynamics. Quantum thermodynamics also explores work from correlations and coherences, and the role of quantum effects in thermal machines. Classical and quantum fluctuation relations are discussed, showing how entropy and work distributions relate to equilibrium processes. Experiments with colloidal particles and single-electron boxes validate these theories. Quantum thermodynamics also examines the thermodynamic cost of information erasure and the role of feedback in thermodynamic processes. The field aims to unify quantum and thermodynamic principles, addressing challenges in nanoscale technologies and understanding quantum fluctuations.