This document provides an overview and introduction to a webinar on navigating the OECD's taxing of the digital economy initiative with Pillar I modeling. It outlines the agenda and speakers for the webinar. Technical instructions are provided for participating in the webinar. An update is then given on recent developments in the OECD's Pillar I negotiations, including statements from various countries and the timeline for reaching an agreement. Key aspects of the proposed new nexus and profit allocation rules under Pillar I are summarized. Finally, an overview is provided of the Pillar I modeling tool that will be demonstrated during the webinar.