Yes. Many of Las Vegas' casinos, including plenty of those on the Strip, offer free gaming classes. This includes poker; spawned by the recent resurgence of the game, most of the poker rooms around town offer free instruction. Quite a few casinos offer lessons in craps -- probably the most complicated game to learn -- and several give lessons in other games, primarily blackjack and roulette. For a complete listing, click here. Even if they don't offer official timetabled lessons, most of the larger casinos will offer some kind of tuition, if asked and dealers are available.
It's been almost precisely a year since we last tackled this question, and at that time the trend was away from casinos offering live lessons and toward providing instructional computer terminals. We checked out one of these at the Las Vegas Hilton and didn't like it: The computer was not only close to the cage (i.e., one of the few places in the casino that's relatively quiet, with lots of people standing in line ready to eavesdrop on your lesson), but the volume was turned way up, which was kind of embarrassing. It wasn't very helpful and gave you no space to write, should you wish to take down some handy tips. So, when revisiting this topic, we've been interested to learn that the Hilton has since scrapped its nasty machine and reverted to human tuition, while Bally's has scrapped the machines, but hasn't replaced them with live lessons.