I'll need lots of pointers

I want to develop a Pokémon fangame but i don't know where I can start. I need the right tools and a team. I want to develop Pokémon Inside and Pokémon Out. I want to bring content fans haven't seen before.

Please, at least do a little research in forum before posting :/

Anyways, go see this post https://www.pokecommunity.com/showthread.php?t=353391
It's a lil' starter guide if you wanna make a hack in gba (FR/LF or R/S/E)
Good luck!