I've got one.
No, it doesn't have 24 tracks, I have no idea why they call it a 24.
What you have is 8 mono channels and 4 stereo channels, for a total of 16. The 8 mono channels have the in-line tape monitoring, which is great for use with an 8-track recorder. You don't have to re-patch to record and mix down, just hit the source button.
It's a very quiet board and it has sweepable mids on each channel. I really like mine, but I'm looking for a larger board now. One limitation is that it only has four auxs.
As for your other question, I'm not sure exactly what you're asking. Are you asking if the aux sends are post/pre, or the channel inserts?
I believe the channel inserts are pre-eq/pre-fader, the aux faders are post-eq/pre-fader. I don't have the manual here but I think that's correct.