As Bob Dylan once famously sang that "the times they are a changin'", and he could not have been more right. Especially about weed. Which he loved. For most of the 20th century, the world was at war with weed. But now, with 24 US states legalizing the drug, its reputation, stature and cultural importance has evolved dramatically, as has our understanding and appreciation of it. Packed with pro rolling tips, playlists to get stoned...