The following books are recommended only in that they may help you achieve a deeper understanding of your art, your craft, your business and, most important, yourself. If you read none other than one book from this list, read Bird By Bird by Anne Lamott. In it, you will find every bit of truth and wisdom you need to become a fabulous writer.
Csikszentmihalyi, Mihaly. Flow: The Psychology of Optimal Experience. Harper & Row, 1990
Egri, Lajos. The Art of Dramatic Writing. Simon & Shuster, A Touchstone Book, 1946.
Elbert, Lorian Tamara (ed.). Why We Write. Silman-James Press, 1990
Froug, William. Screenwriting Tricks of the Trade. Silman-James Press, 1992, 1993
Goldman, William. Adventures in the Screen Trade. Warner Books, 1984
Goldman, William. Which Lie Did I Tell? More Adventures in the Screen Trade. Pantheon Books, 2000
Iglesias, Karl. The 101 Habits of Highly Successful Screenwriters. Adams Media Corporation, 2001
Lamott, Anne. Bird By Bird. Anchor Books, Random House, 1995
Mackendrick, Alexander. On Film-Making. (Paul Cronin, ed.) London: Faber, 2004. (This is the book I use in my classes.)
Obst, Linda. Hello, He Lied: And Other Truths From The Hollywood Trenches. Broadway Books, 1996
Vale, Eugene. Vale's Technique of Screen And Television Writing, Revised Edition. Focal Press, 1998