AstroDan

Hello. Could someone point me to a good resource for vintage Yamahas? I would really love a new bike, but my financial means have led me to a nice looking '74 DT-175 Enduro and I just want to find out as much as I could about these older bikes. Any leads to places for reviews, discussions, maintenance help and resources for parts would be appreciated. I'm not dismissing this site - it just seems a little out of my league until I one day build up my own high-performance armada of super-bikes. - Dan