Homebrew channel

I have just bought a new wii version 4.3. Is it possible to install the homebrew channel to an sd card and load games through the sd card. I have not got any idea how to do this so all help is much appreciated. I have never insalled the homebrew channel so do not know where to begin. Is it possible to run the homebrew channel on version 4.3? If you can help me please could you tell me step by step what i have to do. Thanks in advance newtothis.

Yes you can install the Homebrew Channel on 4.3, follow this guide.
What do you mean you want to load games through the SD card?

if i have a backup copy of my game do i usethe homebrew channel to load this?

No. Read the forum rules.