Now that you’ve interacted with the forum, you have attained TL 1, and can initiate PM.
To learn more about using Discourse, and Talk, check out the “Read First” pin: READ FIRST: Welcome to the Dallas Makerspace
and, as it advises, seek out the “Welcome” PM from discobot, and interact with it; it will walk through most of the basic functions of Discourse, and in the course of doing so, TL1 will be reached, unlocking most of the functionality of Talk.