I have no idea what the heck you are talking about.
I figured you had some background. oooops I'll give more explanation...
It is really best to go to the classes which are a mock show pretty much. Treat every training session like the real deal and make it fun for the dog. A dog that isn't having fun will not perform at his bets IMO.
Easiest way to learn is to check out http://www.apbtconformation.com
(yes it is back up) and also start attending shows and ask questions. Most people are very willing to help newbies.
Stacking is the way the dog naturally stands or is positioned in a particular way to show off the structure. It is a big help just first off teaching the dog a stand stay because it is pretty much the same thing
Here is a picture of Patcheeno 'Free Stacked' at a show in MD
meaning I didn't touch him or position him that was naturally how he stacked himself
Practice the gait..... you have to move the dog at a steady speed so that the movement is shown off at it's best make sure not to let the dog run, sidewind or pace
These are different directions a judge may give you in the ring and they are also the most common ones the judges use in UKC any way
a down and back ( just moving straight down and back in a line. It helps to focus on a spot to help you move the dog straight .... stop at about 3 feet from the judge and have the dog free stack)
diagonal ( move from the corner where the judge is looking at the dog across the the diagonal cornaer and back again. you'll free stack about 3 feet from the judge)
(go stright down , across to the corner than diag. back to the judge and again you'll free stack about 3 feet from the judge)
Some judges in UKC allow bait some don't but you can always train with it and then fake the dog out in the ring if it isn't allowed
Wiggle butt Samurai being examined by the judge in the ring the weekend he got his CH title. The judge will go over the whole body and often push on the dog and sometimes may reposition them a little as well. They check the bite as well