Attack editting, pokeball editting, and combining the two??

[Trainermon]

Hey all,

I am new to the rom hacking world. In terms of actually writing my own.

I am wondering if someone can give me a quick how to on the following

1. adding custom attacks
2. calculating power based off of happinness
3. adding custom pokebals

I ALSO wont my custom attack to call my custom pokeball throw.

I'm deving a game where an ancient pokemon, through the process of evolution becomes the first trainer