Sex. I love it as a topic. I miss being a weird young adult that could just talk about it with strangers.
The "gspot" is a slightly rough (rough for a vaginal wall!) spot found in the vagina (towards the pubic area). Its actually a part of a large collection of sensitive nerves that the clit is connected to as well.
That said an even more important piece of information? Everybody is a little different! Ilicitating arousul can be very different for different people and can lead to different climaxes (and not everyone likes to climax the same!). So the best bet is asking, talking, and LISTENING to your partner(s) about what they do and don't like. You can use vibrators, electrodes, tounges, lips, or even just sweet words, but what matters is what you and your partner's preferences and boundairies. There are also all different kinds of sex, kind of the same way you have different kinds of loves. It can a connecting experience, a game, exercise, funny, but it should always have a level of shared trust because its also a vulnerable experience. Porn for example tends to be very performative, because its not about the actors per say its about you and your surrogate the camera. So while there is a lot to learn and study in that art its not generally good place to learn how to bond with a partner or experience tantric climaxes.