ok, i went on this weekend warrior type thing, and about %25 of the people had fixies.
they really got me liking them.

I have a old frame that should work, and the bike shop says they can sell me the rear wheel for a fixed bike, for $100.

I am trying to keep this as cheap as i can (under 150). I know absolutely nothing about converting bikes to fixed, let alone anything about bike wheels themselves.

any tips for someone who knows very little about these?