to begin with, but the kindhearted individuals over at WiiBrew have decided to make things even easier. The newly released Wii Pack Generator is, in its own words, a "web-based utility that allows you to select from the most recent, up to date, and high quality homebrew for your Nintendo Wii and create a custom pack." Everything you select will be beautifully organized into a .zip or .exe file with the correct structure for easy extraction onto your SD card. Any remaining doubts you had about giving this a go just flew out the window (really, we saw it go down), so check the read link to conquer your fears and start really living.
[Thanks to everyone who sent this in]