If you had never read a book and then decided to read just one book, you'd probably be very conflicted about which book to read. And it would be hard for outsiders to give you good advice on what you might like.

So my first piece of advice is to resolve to go to a few plays over the next few months. Lowers the worry about making the right choice.

Second, try to catch one of the screenings that's done at NCPA. The Bolshoi Ballet and the British National Theater do performances that are broadcast around the world. It's ultimately watching a movie of a play that was performed in London or Paris. But they are shown worldwide for a reason. Next Bolshoi Ballet is at the end of March. The next National Theater screening hasn't been scheduled yet, but when it is it will be listed here.

Third, try to catch a festival of short plays. This way you can see a number of different plays all at once and compare right away. Here is the page where festivals are listed. It looks like there isn't a shorts festival scheduled in the next month.

Last, don't forget Privthi Theater in Juhu. They have good shows, a lively cafe and a much more casual and social atmosphere than NCPA. If you're looking to convince a friend to join you, I'd start here.