Lisbon has a thriving arts-and-nightlife scene, and there are listings of concerts, plays, and films in the monthly Agenda Cultural, available from the tourist office and in many museums and theaters. Also, the Friday editions of both the Diário de Notícias and O Independente newspapers have separate magazines with entertainment listings. The weekly magazine Time Out Lisboa is still more comprehensive. Although all written in Portuguese, these publications' listings are easy to decipher.
It's best to buy tickets to musical and theatrical performances at the box offices, but you can also get them at several agencies, including Ticketline, which has desks in the Fnac book, computer, and music stores at the Colombo and Grandes Armazéns do Chiado shopping malls, in the El Corte Inglés department store, and at the Casino Lisboa at Parque das Nações. Downtown, a booth—called ABEP—on Praça dos Restauradores, in front of the Altis Avenida hotel, sells tickets to theater shows and concerts as well as to sporting events such as bullfights and soccer games. You can also buy tickets to most events on the phone or online.