Well, its indeed 1st gear, but you got two shafts, the input where you can see 1st, reverse, 2nd built into it, and then the ouput wich is the one with the driven gears.
If you are getting the ra tranny make sure they send you the input shaft as well.
Finally the driven gear is just the big one inside the circle
The sequence goes, from right to left:
1st, reverse, 2nd, 3, 4 and 5th
Cheers
DJ