Final Fantasy XII/Return to the Waterway

The Garamsythe Waterway
Save at the Crystal if you like. Once you reach the bottom of the stairs, Balthier will give a more in-depth tutorial on Gambits. Examine the Fallen Soldiers for a short cutscene, then move on.

Turn left at the fork, and nab the Garamsythe Waterway Map out of the urn. Feel free to grab any chests that appear, and make your way to the next area.

The path is pretty linear, but be sure to explore all the nooks and crannies for possible chests. When you reach the East Sluice Control, there will be a Save Crystal. Be sure to use it before moving on to the next area.