At the very first beggining, when you come in with your 1rst puppy, follow the instructions. When it says to give your puppy a name, you will have the mic icon in the middle of the screen. Tap with your pen and then say the name, but not too far of your DS. You will see, during you say the name, like a colored "timer" on the mic icon. For the tricks, when your puppy is doing a thing, for exemple, sit or roll over, a bulb icon with show off in the up-right corner of your touch screen. Tap it with the stylus, and do the same thing : say the name of that trick ( ex."roll over"). You will see the colored mic timer and your puppy will save the information with little stars around its head. You have to repeat it like 4-5 time before it really knows it and do it again. It depend on the puppy ( some are 3-4 time, some more...) I hope it answered your question. You can visit this site http://www.gamefaqs.com/portable/ds/file/928837/39820
you have a whole section on the very beggining.
It's hard sometime...I just passed 30 minutes to get the dog a name he remembered...Choose a name that you can repeat with the EXACT same intonation.