Growing up in Hawaii...It was V3 for me.

Decade was the first Kamen Rider anything I watched. Looking back it really didn't make any sense to start there since I knew nothing about the series.

The first show I watched every single episode was Kabuto though.

KRBlack is awesome dude!
Even KRZO is the nostalgic of KRBlack costume actors.

First KR series eh... Hmm... This is hard, I think it was Kamen Rider Ryuki and subsequent KR shows following it.

Then I started 'researching' and learnt about the older series, and have been watching Black and Amazon (though currently I'm placing them on hold cause of my exams...)

Oh yeah, and I'm reading the "Kamen Rider Spirits" manga =D

Thai dubs of Black RX where Roborider was introduced, my cousin showed me when I was 7 or 8.