Where is the gspot???

When me and my boyfriend are going at it i cant seem to hit my spot? And when im by myself looking for it im not sure if im touching it or not. My bf is more than capable of reaching it iykwim. Maybe it's because i dont know what it's supposed to feel like?

Can someone describe the feeling for me?

Also give me tips on how to hit it? I know it's different for everyone but if i could get some starting positions and continue from there that would make things tons easier. Thank you thank you