LITERARY: City Arts & Lectures presents Anne Lamott and her son, Sam Lamott, who are continuing the tradition of documenting the first year of their offspring's life. First, Anne published Operating Instructions 19 years ago, about the first year of Sam's life, and now the pair have come out with Some Assembly Required: A Journal of My Son's First Son, about the first year in the life of Sam's son, Jax. They'll be taking part in a lively discussion about parenting and grandparenting tonight. (8 p.m., Herbst Theatre, 401 Van Ness Avenue)

MUSIC: City Tribe, who describe themselves as "an artistic montage" formed on the principle of vocal harmonies, "and what followed was rhythmic and melodic charisma that would both charm your mother and put you at the tea table with your worst enemy," headline Bottom of the Hill tonight. Also featuring, indie folk fave, Ash Reiter, and hip hop soul outfit, Dirty Boots. (9 p.m., Bottom of the Hill, 1233 17th Street)

WORKSHOP: In celebration of the upcoming Earth Day, Dr. Carol Queen, Ph.D will be explaining of what makes a sex toy green, and how to have a better orgasm with Good Vibes' environmentally sustainable products. (6 to 7 p.m., Good Vibrations, 603 Valencia Street)