I' am 21 and my man is 24 when we in have sexual intercourse it feels lovely because I love him and he loves me. How do I know when I' am and also how do I give him tips on hittting my G-Spot.

We need more details about your situation. In your question, you asked, "how do I know when I' am" and I'm not sure what you are asking there.

You give him tips, show him where, tell him how, and explain when it is not. YOui talk about it.

"Do it this way baby, no over there, ahh thats it."

I don't put much stock in the so called "G-Spot"... just my opinion. No magic "buttons". :)

Me neither, but I can follow a few directions.

LOL!

You're a great guy. :D

Tell him its like saying come here with his fingers on the upper wall about 2 inches inside you

I'll second that...

You give him cues when he's doing it for you, guide him to what feels best. What works won't be exactly the same on any two women. Hence he needs your input.