any pokemon cheats or walktrough youd like to share?

I've got so many cheats and walkthrough for pokemon GBA because I've finished the game already. I will not write all the details because it is too long. In pokemon ruby, at the beginning of the game you have to choose pokemon among the three. The available pokemon are mudkip, torchic and I forgot the other one but his color is green. Be careful in choosing of the pokemon because the one that you will pick will become your main pokemon. Among the three, the most powerful is mudkip because he has many abilities and also has a balanced character among the three. Just raise this pokemon to become powerful.When you get to the place called Rustboro, the president will give you an amulet coin because you are given a task to give the letter to Steven. Equipped the amulet coin to the most used pokemon in the battle because it will help you to earn money. Equipping berries is also helpful in pokemon. Let the pokemon hold a berry because it will instantly heal the problem in his status. The effect of berry to the pokemon depends on the type of berry that you give to the pokemon to hold. You can't make a pokemon to hold a man made things like potion because they don't know how to used it. Ive forgot the other things that I know because I played the game long time ago. Anyway, hope this cheat will help you.