It depends on the girl, man. Some girls prefer "asshole game" while others prefer you be a good guy who takes her out on dates, values her, etc. (not in a chode way, but just being a good human being). Admittedly, these girls are a lot more rare nowadays, but most girls like someone in the middle.
If you want to learn how to be an asshole
, the main thing to focus on is being 100% who YOU are, unapologetically.
Far too many guys focus on being someone else, appeasing other people, and bowing down to social pressures, but a true "asshole" is really just an "alpha male." Learning how to be an alpha male will take some time, and a lot of practice, but obviously you can do anything if you set your mind to it.