As many a meme make abundantly clear, the idea of “adulting” can be as intimidating as it is vague. That’s why the Adult 101 Fair will feature tips and tricks to help teens learn the mystical art of “adulting” and all that it entails: Mastering skills like preparing for college, managing money, cooking simple meals, and more. Hosted by the Somerville Public Library Teen Room and Teen Empowerment, the fair takes place Thursday, February 28, from 3 to 5:30 p.m. at the Central Library Branch. Be sure to visit the event page for more details.