Harry Potter and the Cursed Child Resources
Websites

You'd need an act of magic to get tickets to the blockbuster production, which might be sold out until you turn forty. No scalping spells, please.

Pottermore is, of course, your source for all things Potter, even Potter on stage.
Articles and Interviews

The cast and crew decide not to #keepthesecrets about the making of the play.

Fans analyzing the cover say it is Delphi's Augurey tattoo with Albus trapped inside. But why is the tat an evil Snitch?
Video

BBC reporter Will Gompertz, who should be a Harry Potter character, talks to Jo and the playwrights about their creative process

If you're cursing JK Rowling because you don't know whether to say "curst" or "curs-ed," this video is for you.

They take this two-part thing so seriously, even their interview is in two parts.
Audio

The best way to get people on the radio talking about your play is to tell them to keep it a secret.

A new Harry Potter book is basically a spell that says, "Accio, fans!" at midnight.
Images

Draco and Scorpius must use Sun-In & hair bleaching magic.

Here is the cast after Daniel Radcliffe et al have Polyjuiced into new people.