This is something we've addressed over the years (2005, '06, and '07, to be precise) although not lately, not least because when we last looked it, free gaming classes seemed to be going the way of live keno lounges, with some properties experimenting (briefly) with computerized lessons (we tried one and didn't like the experience of trying to concentrate on video lesson while standing in the middle of a noisy casino where everyone seemed to be staring at us) and others dropping the concept altogether. Being in the midst of the original online-poker frenzy, our research revealed that many casinos had given up on teaching anything aside from no-limit Texas hold'em, so we stopped checking for a few years.
In the interim, it turns out that less has changed than we had feared and the waning of the poker frenzy (several of the rooms that used to offer lessons have themselves closed, including Fiesta Henderson, Jokers Wild, Paris, Riviera, and Sunset Station) has evidently led to a preservation of some of the instruction available for other table games. So, the good news is that you can still catch a free crap lesson daily at Flamingo, Monte Carlo, and New York-New York, with other sessions scheduled on various days throughout the week at Golden Nugget, Jerry's Nugget, Luxor, Palazzo, The Quad, South Point, and Stratosphere. Still other casinos will offer a lesson upon request, if it's not too busy, especially if you have a group of people all wanting to learn. You can find the complete lowdown on when and where, not just for dice but for all the other table-tames for which instruction is offered, on our freshly updated Free Gaming Lessons page.
For video poker players, remember that expert Bob Dancer offers free seminars at various points throughout the year, usually at South Point or sometimes Sam's Town. The last series ended back in April, but there will like be new seminars commencing in the fall, so watch his regular Tuesday LVA column and/or the "Video Poker Lost and Found" feature in the monthly LVA newsletter for updates.