STEP 1: text "book" to +1 (646) 603-1430
STEP 2: record the title and author of the book you're reading and set a tag that you'll use to thread photos, quotes, and thoughts as you read (e.g. grapefruit)
STEP 3: to add a post while reading, start your text with a caret (^) + the tag for that book. (e.g. ^grapefruit)
STEP 4: each carrot/book has a unique URL. (e.g. carrotsrock.com/c/grapefruit)