Practical magic and herbs. Even though he's already learned or learning about such things from other, it might be a bit different getting taught by someone who was out on the field a lot. That could server useful.

At the comment about guarding, Sam gives a snort. "You can actually guard against something like that?" Dodging and evading he could understand. Guarding? Even with his barrier, Sam knew there would be serious injuries if he got hit with such a thing. "Am I to learn about defending against other weapons from others then?"