I made a quick translation :
Installation
copy the boot.elf file on a SD card
create a "homebrew" folder on the SD card's root.
for each homebrew :
-create a subfolder in the "homebrew" folder (8 characters max)
-copy the .elf file in this folder and rename it boot.elf
-[optional] To name a homebrew create a .txt file, edit it and name it with name you want
-[optional] In order to illustrate the homebrew, create a 132x95 pixels bmp24 picture. Name it title.bmp and put it in the homebrew folder.
How to use :
use the NGC controller
D-pad : select homebrew
A : launch the homebrew
R/L : switch page (11 homebrews per page)
Z :
I gonna try it soon. I still doesn't have twilight princess.
does someone know how to run a homebrew with trucha, so without zelda ?