Your basic parking the rear end on the ground when told to do so.  

A good basis for this is while your dog is standing on all four paws.  Let your dog know you have a treat in your hand and move a treat back and above over your dogs head.  Its natural reaction will tend to be to assume the sitting position to follow the treat.  Issue the sit command before you dogs butt touches down.  From here as with all tricks its a case of repetition.

Put your dog in a sit, while close.  Once your dog appears comfortable, show then a hand signal something such as a flat palm or a single raised finger and give the "Stay" command.  Take one step back and if your dog stays, reward then with a treat.  Repeat this and gradually move further away.

Over time you will find you will be able to make your dog stay for longer and greater distances and even when you are out of site.

Pushing this command on to a further level you can develop an emergency stop.  The ability to make your dog stop in its tracks walking away or coming toward you.  This can be a very practical and important when walking your dog off lead.

Recalling your dog to you, from it being in a static position or running free.

A good recall is very important if you are to walk your dog off lead.  If is your responsibility to be in control of your dog at all times (on or off lead).

Basically speaking, to teach this command you need to call your dog with what ever word your going to use.  Keep it short, we use "Come", and try and keep your voice pitch quite high.  Start when your dog is near by and it can help to come down to the dogs level on one knee when you call.  If your dog comes, reward them with both a treat and lots of praise.  Repeat this and over time you will find you can call your dog from further distances. Do not treat your dog for coming when not called.  

If your dog does not come back to you immediately, don't worry, this command takes time to perfect.  Don't punish your dog for not coming, better that you just brush it off and wait for another chance to try again.

We also use an alternative to the verbal command which is two short whistles, we find that the whistle carries over further distances

An old favorite, being given a paw, usually from the sit position.

A favorite trick to get your dog to give a paw.  Put your dog in the sit position and present your open hand palm up and issue the command "Paw".  If your dog places its paw in your hand, reward them immediately.  If your dog does not place its paw in your hand, lift your dogs paw and issue the command "Paw" again and then reward the dog.

This is really an extension of the paw command.  Rather than just be handed a paw your dog will reach out, giving the effect of waving.  We achieved this my much practice of the paw command but moving your hand further up and away, then rewarding every time the dog reaches for your hand while remaining in the sitting position.

Some call this "Playing Dead".  Its making your dog lie on its side and stay there until asked to get up.

This is a trick to work on once your dog responds well to the "Down" command and is also best performed on soft ground (sand or grass).  When your dog in the down and you will see that they tend to lean one way or the other take note of this and use this as the side to direct your dog to lie on.

Start with the "Down" command and once the dog is comfortable, hold a treat slightly above the head and then move this in an arch in the direction you wish your dog to lie and give the command "Side".  To help this along, you may wish to gently push your dog in the direction you wish them to go.  As soon as the dog is settled on its side, give the treat and lots of praise.  To develop this trick extend the time your dog stays on its side before you give the reward and start to increase the distance from where you issue the command.

Getting your dog to roll over on its back from one side to another is the next step from the "Side" command.

When your dog is on its side move the treat in a further arch away from the dog in the same direction you used to make them lie on their side.  When doing so issue your command.  We use "Over"

This arch movement with your hand also gives you a hand signal to use with your voice command.