Installing twilight hack, SD card memory size and Homebrew Channel updates

When istalling twilight hack, what should i do after i start homebrew program ? Should i just shut down Wii by pressing POWER button or disconnect plug from power outlet ?
Should i have exactly 2GB SD card to install Homebrew Channel or can it be done with 1GB SD card also ?
Which Homebrew Channel updates works with 3.2E updated Wii ?

When the hombrew channel is inctalled just hold down the power button unitl it goes red,
You don't need a 2gb card I did it with 512mb
Im not sure about the hombrew Channel..