The focus of the first phase is to organize the project.
Usually just one that focuses on establishing the project environment and organizing the team.
Create the initial iteration plan to detail who will be doing what in the iteration.
Most of this plan should be filled in from the beginning, but a few topics (like handover) might be completed in later phases.
Create the glossary from the very beginning.
Finish the phase with an iteration report that lists achievements and lessons learned.