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I installed using the APK and I'm playing just fine. I'm level 6 now and PokeStops and gyms are working too.

That 1 catch you are talking about is actually how the game works. After 1 catch, you need to walk around.
Use the website PokeVision.com to see what pokemons are nearby your location.

thanks for the link, but my are no pokemon around my area..... I guess need to wait official release then.