There isn't any guess work, you simply need the ability to use google and to read.
You are looking at an article that is likely several years old.
http://wiibrew.org/wiki/Savegame_Manager
p.s. You go to wiibrew to get wii homebrew, it's the "official" site. There are other save game managers as well, so browse the site.
I had a bit of a 'doh' moment when I watched some dodgy youtube clip and realised I should be putting the app in the 'apps' folder

Still doesn't work though, and my homebrew channel looked like his homebrew channel. I still say it's guesswork when the original authors instructions are 'run the application'. I openly admit that I'm a retard with this stuff, but surely I'm not the only one who needs to have his hand held with this stuff? Mame32 was much better thought out, these young 'uns making this stuff now just don't know how good it was in the good old days, ten years ago

edit: I feel like a bit of a detective trying to find the basics. Here's a French youtube clip that has given me the latest clue:
In it, I see 'homebrew browser' in the homebrew channel, which I don't see on mine. I wonder if that got left out in the install? The investigation continues...
edit: Looks like homebrew browser is a separate app. This is the sort of thing that is irking me, why is everything so disparate? Anyway, that is now in the app folder. And I've found out how to see the other apps, I have both save game types in there, your one and mine (which is only a few days since being released). Trying to launch anything (homebrew channel, both save games) just gets me 'error launching app'. Sigh...