I just played through the VD and PC in tutorial mode. Overall, it's very good and the instructions are clear. I think the hints cover all the most important game commands, with the exception of the suggestions below.
Here are my suggestions:
1. The very first hint window should start with instructions to use arrow keys to scroll and spacebar to clear the window.
2. The first time the PC is wounded, a hint window should explain how to use first aid.
3. The first time the PC is poisoned, a hint window should suggest using first aid every time you take poison damage.
4. The first time the PC is adjacent to a dark square, a hint window should explain how torches are used.
Finally, for some reason my human fighter found six spellbooks in the first two dungeons. It's not beyond the bounds of reason but it's startling--by any chance does tutorial mode change the drop rates?