Glad to have you on board, man. Take some time to browse through the forum and find some advice that's specific to your situation.
In my experience, the biggest thing is to shift your underlying belief. When you're evolving as a person, and you want to learn
how to be an alpha male, the key is to focus on the BELIEFS rather than ACTIONS.
Focus on both at first, but you'll find that eventually, if you get the beliefs right, the actions will naturally follow.
Here's some "alpha male beliefs" for example, you might want to start integrating into your thought process:
-I'm the shit
-I accept myself
-I act how I want to act
-I do not bow to social pressure
-I am strong enough to help others
-I generate my own good mood
-I am not afraid to be myself
-I am okay with who I am
-I deeply accept my flaws and strengths
-Girls love me, because of who I am
Work on integrating these into your belief system, and you'll be golden. Say them 100x each day to yourself, upon rising, and before going to bed. Affirmations seem cheesy, but they're the real deal (they work).