Steven goes to the Pewter museum of science
you find him in pewter city
Steven, as the Champion of Hoenn Region, gives you one of the Hoenn starters, which are Treeko, Mudkip, and Torchic.
The first starters are obviously at the beginning of the game. (cyndaquil, totodile, and chikorita) Next starters are after you beat Red and The Elite Four. Go to Proffesor Oak and he gives you the Kanto starters (charmander, squirtle, and bulbasaur). Then you run into Steven and he gives you the Hoenn starters ( torchic,treeko, and mudkip)
Steven gives it to you on the bridge to the west of Fortree City.
no if you check serebii it gives you a list of all the pokemon you can find.
in mossdeep city steven gives it to you
Steven is in Silph Co. in Saffron city
I believe that Steven gives it to you in Fortree City.
A Devon scope.
Silph Co. building. After you've beaten Red, he will give you one of the Hoenn starters, in Celadon City
If you're talking about Starter Pokemon, Steven gives one of the Hoenn starters (Treecko, Torchic, and Mudkip). He'll also trade his Beldum for a Forretress. You also talk to him in order to allow Latios/Latias to enter the game.
he will be in the cave to the top left of the map, find him and challange him.