Recent developments and results in the area of electron paramagnetic resonance (EPR) in molecular nanomagnetism are reviewed. Emphasis is placed on unconventional measurement methods, such as frequency-domain magnetic resonance spectroscopy, interferometer-based Fourier-transform, terahertz spectroscopy, and terahertz time-domain spectroscopy. In addition, different methods to investigate EPR by monitoring the change in magnetization or magnetic torque in the presence of microwave radiation are discussed. Finally, an overview is given of application of pulse EPR in investigations of molecular nanomagnets.