I just started this game and got my first pokemon, started doing some battles and got to Cherrygrove. Now when/where do I get a pokeball to catch others? Maybe I'm missing something obvious or am just too impatient... probably both. But there's no pokeball in my bag.

 

Thanks! Just worried I might have missed something. Not much fun not being able to catch anything.

Yes, the name is about as unoriginal as it gets... I just can't keep track of usernames, and I don't like to use the same one everywhere.

 

beat your rival and you can buy pokeballs after the girl shows you how to catch pokemon