Author Andy Greenwald would like you to know that you can stop worrying about your kids. At least when they’re out at a rock show. He would also like you to know that your offspring have feelings, and that they would like you to take them seriously. While you’re at it, please go out and buy them the latest Dashboard Confessional release. See, DC’s Chris Carrabba has feelings, too. He expresses them way better than your kids can, and he makes all the sad girls and sensitive boys that your progeny have crushes on feel very excited and understood. For further insights into your brood’s behaviors, pick up a copy of Greenwald’s exhaustively researched book Nothing Feels Good: Punk Rock, Teenagers, and Emo. It’s a history of sorts, and it’ll give you the background on Jimmy Eat World that you so sorely need in order to relate during these troubled times. Greenwald explains it all at 7 p.m. at Olsson’s Books & Records, 2111 Wilson Blvd., Arlington. Free. (703) 525-4227. (Mike Kanin)