Hm, not quite. ASM isn't really required knowledge, unless you're getting into really tricky stuff (such as adding animations). If you can make do without it, do so.
Anyways, peeps! I've updated the tutorial with two new sections; a quick view over memory maps, and a proper guide to repointing (rather than just explaining pointers). Both are intended for the GBA though, my apologies to you awesome GBC hackers!