Women know their bodies better than men. Be honest, open and just ask your wife what she likes. She'll show n tell. And love you desperately for it.
The topic itself is probably not-safe-for-work, but there's nothing graphic.
A few bullet points:
*Where is the G-spot located (and what is it)?Pro tip, Guys. You're coaxing a genie, not stuffing a chicken. Video? Click here.
*How to find the G-spot
*How to have a G-spot orgasm
*Is a G-spot orgasm more powerful than a clitoral orgasm?
*What are the best sex positions for G-spot stimulation and orgasms?
*Don't be discouraged if you can't find your G-spot.
H/t: Maggie's Farm