In today's daily links, an upcoming documentary about rock and blues guitarist Eric Clapton, the world's finest uncut opal, self-help books and a photography newsletter.

• "A Life in 12 Bars" – a documentary about rock and blues guitarist Eric Clapton in the works. (Rolling Stone)
• The South Australian Museum in Adelaide, Australia, now displays the world's finest uncut opal called the Fire of Australia discovered in 1946, worth more than $675,000. (CNN)
• 'The Self-Help Game' – an article by Rami Gabriel, associate professor of psychology in the Department of Humanities, History, and Social Sciences at Columbia College Chicago, in which he asks if self-help books really work or if what we really need is more how-to manuals. (Aeon)
• FlakPhoto Digest – a weekly newsletter devoted to photography and visual culture.