Just thought it would be tidier if everybody maybe put their queries about the games in this thread.
Just ask your questions and wait for answers from fellow members.

I'll start.

Where in Sapphire/Ruby is Stephen's house?
I heard that after you beat the League you can get Beldum there. (steel/psychic Pokémon).

And I've been fishing in Lilycove for ages but I still haven't come across Staryu. Where did you find Staryu?