What to read after The Importance of Being Earnest?

The play opens with Algernon Moncrieff, an idle young gentleman, receiving his best friend, Jack Worthing ('Ernest'). Ernest has come from the country to propose to Algernon's cousin, Gwendolen Fairfax. Algernon refuses to consent until Ernest explains why his cigarette case bears the inscription, "From little Cecily, with her fondest love to her dear Uncle Jack." 'Ernest' is forced to admit to living a double life. In the country, he assumes a serious attitude for the benefit of his young ward, the heiress Cecily Cardew, and goes by the name of John (or Jack), while pretending that he must worry about a wastrel younger brother named Ernest in London. In the city, meanwhile, he assumes the identity of the libertine Ernest. Algernon confesses a similar deception: he pretends to have an invalid friend named Bunbury in the country, whom he can "visit" whenever he wishes to avoid an unwelcome social obligation. Jack refuses to tell Algernon the location of his country estate.