When learning or just reading about Science, Mathematics or other subjects do you ever read Dummies or Idiots? Or do you prefer reading other texts? For computers I usually enjoy books not from Idiots or Dummies since they don't cover as much, and for learning programming I usually find free tutorials on the internet. For Math, I use Dummies and seperate books. For other sciences I like using Dummies and Idiot's Guides. How about you? Do you like the quality of the two?