I think it'd be useful. Topics that could be useful for a newbie:
1) It's not immediately obvious that the Ultimate Tutorial has a section on how to use no$gba (as far as I'm aware, one of the most popular debuggers for GBA), since it's at the very bottom of the Assembly section. When I first started out, the hardest part for me was learning how to use the damn thing (especially setting breakpoints, since the official documentation, while thorough, isn't particularly newbie-friendly).
2) Branches. What types are there, what are their limitations, and how to use them effectively (especially long-calling).
3) IMO, the most important, and probably the hardest to put into words: How to think about what you want to do, and go about doing it in the most efficient way. Yes, experience is really the best way to learn, but maybe you can go over a few things you've done and explain how you went about implementing them.