Generous, encouraging, and nothing if not thorough, “Pity the Reader” is a kind of fiction writer’s chapbook, using the great satirist’s comments as a jumping-off point to address the budding writer’s most basic concerns.

On the 60th anniversary of the play’s first production on Broadway, Lorraine Hansberry’s “A Raisin in the Sun” will open at Bay Street Theater in Sag Harbor Thursday evening and continue public performances through Dec. 1.