Programming A Pathfinder
This becomes available when you return to Nexus after founding your first outpost. The Cultural Center in the Docking Bay is now accessible- speak to the asari running the place twice for her to mention that she needs your input in programming an informational VI on Pathfinders (if she has the bootleg Shepard VI from ME:3, it's not on display. Alas).
Talk to the indicated VI and give it your views on the ins and outs of Pathfindery. There are no wrong answers, so just follow your heart to finish the VI initialization, and reap some XP.