I really let the dog drive the session. I usually do just one behavior per session but will sometimes do a couple of sessions in a night with a break in between. I like to have some sort of prompt in place for the new behavior before I ask for a different one.
For example when I taught my old boy to put his head down on his paws it started with just clicking when his head touched his paw. (no prompting, pointing or speaking) When he figured out what was earning the click I started saying 'head down' when he offered the behavior just before the click. It didn't take more than a few reps before he would put his head down when I said 'head down'. (he was a very smart boy!) Once he was at that point I quit and put him away...then a while later I took him out and started shaping 'wave' (cause that is what he offered) we didn't get too far with wave until I had bruises on both legs...wave seems to mean swat with your paw...ouch...so I put him away and later went back to more 'head down'.
Lots of fun to have with the clicker. I find commercial breaks are a good length for clicker sessions cause then you don't keep going too long...if you are like me you sometimes don't know when to quit!
