Our software update is now concluded. You will need to reset your password to log in. In order to do this, you will have to click "Log in" in the top right corner and then "Forgot your password?".
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
Adding to the good answers already provided I would also learn basic programming stuff like functions. Preferably you would watch a C tutorial video or something like that. You don't have to know everything perfectly well. Just enough to understand to pokeemerald decomp code a little bit more.
Exeggutor and Victreebel are borh really good in the sun sections of the game. Swift Swift Kabutops, Swampert and Whiscash are decent in the Rain sections.