Here's all the info I could find on the subject. BEST of luck.
"How to Use a Vibrator
For those unfamiliar with the delicious buzz of vibration, these pleasure-providing toys can be a little daunting. Before you buy, check out our Catalog Coach for great tips on choosing the toy that's right for you. Once you've got your vibe of choice in hand, it's time for the fun to begin.
First, set the mood. Give yourself a block of time to play with your new toy, put in some relaxing music. You might feel more comfortable using a vibrator alone for the first time, so you can get used to your body's response without having to think about a partner at the same time.
No need to rush to the clitoris with that new vibe. Get used to the feeling first by running it over your body --try it on your nipples, thighs and ear lobes. When you're feeling turned on, try holding the vibe against your clit. Some women find the buzz of a vibrator intense the first few times; if this is true for you place a towel between you and your toy or use it over your underwear.
Experiment with your toy to see where and how you respond. The clitoris has about a jillion nerve endings (ok, 4,000 to be exact), and is often most responsive to vibration. Any vibrator, even those long skinny ones that look great for penetration, can be used on the clit. You might find that as you get more warmed up, you like more intense stimulation. But by all means, try that toy anywhere that feels good.
If you really like penetration and clit stimulation at the same time, try one of our Dual Action Vibes. If your toy has a flared base, like the Serpent's Tail, throw a condom on it and try it for anal penetration--vibration is great for relaxing anal muscles. And though the vaginal walls aren't as sensitive to vibration as the clit, your vibrator is sure to do double-duty as a dildo, especially if you choose a toy made of comfie jelly rubber, like the Nubby G, or cyberskin, like the Lux vibe.
Don't Give Up Tips:
A drop or two of lube, like Liquid Silk, will make your vibrator forays deliciously slippery.
Men like vibes, too! Try sharing a toy like the Orbit Ring Vibe or snuggling up to the Hugger.
If sharing your toy, using it anally, or just to make cleanup easier, slide a condom on it first.
Wipe your vibe down with antibacterial soap and then plain water after use.
Have fun!
Harder vibrators, like the Slimlines, and electric vibrators, like the Hitachi, usually have stronger vibrations than toys made of jelly rubber or softer materials. "