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Before you go exploring you need some tools:
*G Spot Vibrator
*Lubricant
*A Sweet Explorer's Hat
Which lubricant you use is up to you, just make sure you stay away from anything flavored (very sticky).
The vibrator is a really important tool. I found that attempting to find it with my hand alone was highly unsuccessful and made my wrist hurt pretty sufficiently.
You have several options when choosing a G Spot vibrator. I recommend investing in these two:
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The first one is firm, so its very easy to move around and reposition. This will be your main tool in finding your G Spot. You can get it here: http://tinyurl.com/mfk2xu for a whopping $7.90. While its not the best quality, its very affordable, ships quickly and three months later mine is still working. A nice side-note: its waterproof.
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Now that your geared up lets talk about where your G Spot is and how to find it.
First things first: make sure that you are very aroused before looking around. When you are highly aroused your G Spot swells, making it easier to find. Once you're revved up, lie on your back with your legs spread and knees bent. Start by using just your fingers. With your palm facing upward, gently slide your index and middle fingers a couple of inches into your vaginal canal and make slow come-hither motions against the front of your upper vaginal wall. It will be a small area that feels spongy. If you are aroused it should be engorged, making it more prominent. If you reach a structure that feels smooth and firm, like the tip of your nose, your touching your cervix (the lower part of the uterus), and you've gone too far up.
The only way to really know if you've hit the bull's-eye is if stroking the area arouses you. Massage it in a rhythmic motion with varying amounts of pressure, switching among a flickering move, rubbing from side-to-side, or tracing circles. Don't be surprised if you feel like you have to urinate. The feeling usually subsides. If you are anything like me doing this for just a few minutes makes your wrist hurt. Switch to your G Spot vibrator. This will make it much easier to reach and make massaging side to side and tracing circles much easier.
You are probably not going to find it the first time you go looking for it. Dont let it stress you out. Try for a little while and then move on, you have another button that is fun to push. Im sure your partner is amazing but they are not going to be able to find it and then stay in exactly that position for any useful amount of time. It would be like you pointing to a spot on the wall, sending them out of the house and then telling them to come back in and find that exact spot again with the lights out.
Because of its proximity to your urethra- take it easy. Don't be rough or try for longer than 15 minutes at a time with your fingers. The last thing you want to do is give yourself a UTI. Because your vibrators are more pin pointed and smooth than your hand they are less likely to agitate your urethra.
Remember: its not likely to send you into an instant mind blowing orgasm. For some women it will feel very nice, just like a clitoral orgasm can be very nice. For some women it may feel uncomfortable, just like some women find having their nipples pinched is uncomfortable. Some may not feel anything at all and some may have a very intense orgasm. Either way chances are good all of your lady parts are functional. If you find that stimulating your G Spot is not pleasurable or is uncomfortable there are plenty of other ways to enjoy yourself.
Most importantly: Be calm. Enjoy yourself. Take your time. Getting to know yourself, your body, and your Vagina can be very fulfilling and increase your ability to express your self sexually.