ThreeDeus does what it says above, It downloads the files needed for Homebrew for your console of choice (Wii U, 3DS, Wii, DSi)
You can download ThreeDeus here.
You can download the OSX port here.
You can download the GUI version here.
You can download the Python version here. (Coming Soon!)
A: No.
A: Yes.
A: Of Course.
A: Of Course!
A: Just run the .bat/py file, simple
Note: you need mega-tools for it to work now, you can download it here
^ looks like all links don't use mega, but still get it just in-case.
A: No... It only Downloads the files, and opens the guide, you need to do it yourself