Gravitational lensing of gravitational waves (GWs) occurs when these GWs encounter large agglomerations of matter, resulting in the production of (resolvable or unresolvable) images. This is a highly anticipated phenomenon expected to be detected in future observing runs of the LIGO-Virgo-Kagra detector network. In this seminar, I will give a brief overview of a few of my works pertaining to this topic. Specifically, I will talk about the data analysis techniques used to detect strongly lensed GWs and how the non-detection of microlensed GWs can enable constraints on the fraction of dark matter as massive compact halo objects. I will additionally look into the future to see if GW lensing can be leveraged as a tool for GW early warning, for identification of compact binary coalescences as progenitors of FRBs, and constraining cosmological parameters.