I've already mentioned the brilliant from the gutter blog, and apparently I'm mentioning it again. Why, I hear you ask. Well, because this time there's a lovely 35-pages long PDF guide on running those lovelier Nintendo DS homebrew and freeware games, apps and emulators, which you can freely download here. Oh, and it's aimed at the NDS homebrew beginners, too. Lovely indeed.
Related posts: a collection of free DS games & apps, Sonic Rush DS beta, ZX Spectrum DS emu, free Zelda DS