[And she's back at the building as well, in similar (if not the same) clothes as yesterday. Given that Sokka knows how Lily values buckets, she's bringing one to an area before dumping it out by a wall. Prior to the dumping, it seems to have been filled with sand and dirt.]

Right on time!

[Well, no time was actually set.]

And no worries, we really will be starting out with the basics. Lesson one; grip. You want to start with the vertical or horizontal?