I bumped Mr G's Try This and Report Back thread...it's the expert on G spots although I think it's with a partner...but read through..should give you some ideas
i'm a guy, so i don't exactly know just how much more fulfilling it is, but going by how quickly my current girl can hit an orgasm (very), how loud she is (VERY), and how many times she can do it in a session (i can't count that high ), it's pretty damn fulfilling!
the interesting thing is, a long time ago me and an ex tried hitting it using instructions for kama sutra or one of those books. nada. then someone (a female) i know from some sex board (sounds like a credible source of information already, huh? ) described the preferred method in just four words - "two-finger 'cum here'!". so i gave it a try on the first night with this new girl and it's been on both of our minds ever since!
isn't the g-spot something that not all women have? i recall reading something along those lines...
All women have a G-spot.It is two to three inches inside towards or behind the clit.Stroke the area and it will kind of raise up,the get rough with it,and enjoy watching her cum and cum again,I get my wifes worked up and put her on her back on the edge of the bed and I stande at the edge of the bed and get her g with my cock.in this position and on her back I can make her squirt every time.Usually multiple times
if you're trying to stimulate the g-spot by yourself, you might try using a curved vibrator. that's often easier than the contortions you may have to go through to reach it by hand.
For learning about and experimenting with G-spot play, I strongly recommend Good Vibrations (http://www.goodvibes.com/). Their website has a wealth of information on the topic, and you can order online too. They offer a wide variety of dildos and vibrators designed for G-spot stimulation, as well as books on the subject. If you happen to be near San Francisco, they have 3 retail stores also.