Once you start Kismet, and you see your AP listed, press "S" and then choose a sort option (I usually use capital "P" to sort by packets).
Use the arrows on your keyboard to highlight your AP and then press "I" to get info, that's where you'll find its MAC and other various id's.
Once you've got that down, press "C" to list the clients connected to the AP, again I prefer to use "S" to sort the clients (providing there's more than one) and then press "P" to sort them by packets...that way you can see which client is the most active and use its MAC for later.
Press "Q" several times to get back to the main screen, more help can be found by pressing "H".
If there's no clients connected the common recommendation is to use a fakeauth attack, read more about that in one of the tutorials.
In Kismet's main listing, check the PWR column. Higher is better.
That's all I could help you with for now.



