i met a girl some days ago , i want to ask her to go out with me the thing is i want to be very direct this time i'm usually not direct though , i've just finished to read David x's book and it's one of his main advices , i'm not afraid of rejection i just want to know what would you do in this case , would you play it stealthy the first times or you go for the direct way , what would you say in both cases ?

Say this "I'm going to [insert thing here] you want to come along?"

If you don't have anything to invite her to say "want to grab a drink?"

Simple, easy, done. She will either accept or she won't. If she doesn't move on.

what i had in mind is to go to the target ,pull her out of her group and say to her with a very confident way `` i want you to know that i find you really beautiful and i want you to become my girlfriend `` , i never tried something as direct as this one but maybe one of you will enlighten us more about it ,

You can if you want, but you are putting it all on the line when you don't need to. Invite her into you world and let it happen. Too many guys are too impatient. Build up attraction, make her comfortable with you, kiss her hang out, have sex, eventually it will just happen. If not you simply need more practice.

There is nothing wrong with spending some time with her, touching her on the waist and saying "you are the sexiest girl I know." Or something like that. This gives her a chance to pull away without too much damage, but also let's your intentions be known in no uncertain terms.

By putting it all on the line you risk losing other opportunities if she says no. Remember, hot girls have hot friend who have hot friends, etc...

Be cool, don't give a shit what happens.