Gothic Blog: https://gothicfictionblog.wordpress.com/
Tor.com talks about Gothic: http://www.tor.com/2012/06/19/whats-gothic-now/
Here's a good primer page: https://www.google.com/#q=Gothic+Fiction
Your friends at Goodreads: http://www.goodreads.com/list/show/1230.Best_Gothic_Books_Of_All_Time
Gothic Movies: http://www.indiewire.com/2015/10/18-great-films-of-gothic-horror-and-romance-to-watch-before-crimson-peak-112007/
Some suggestions from the panelists and the audience:
Books:
Windward Heights by Maryse Condé
Wide Sargasso Sea by Jean Rhys
Affinity and Fingersmith by Sarah Waters
Respectable Horror edited by Kate Laity
Speaking to the Skull Kings and Other Stories by Emily Cataneo
Voodoo Dreams: A Novel of Marie Laveau by Jewelle Parker Rhodes
“The Specialist’s Hat” by Kelly Link
The Picture of Dorian Gray by Oscar Wilde We Have Always Lived in the Castle and The Haunting of Hill House by Shirley Jackson
Films and TV:
Crimson Peak
The Orphanage
Penny Dreadful (TV)
Victor Frankenstein
The Babadook
Salem (TV)
The Woman in Black
The Handmaiden
Comics:
The Girl from Raw Blood by Sarah Vaughn
Dude Watching with the Brontes by Kate Beaton