I don't understand why people can only use something with a video tutorial.
what is your problem ? downloading savegame manager gx ?
extracting a zip on your computer?
creating a folder on your SD and copying files from computer to SD?
launching Wii homebrew ?
using savegame manager gx ? just try what you see on screen ? it's all self explaining "backup" is probably used ... to backup ! and "SD" is probably used to list SD content, while "Wii" is probably used to list content on Wii, while Mii is probably used to list Miis
"put the wiimote cursor on the button you want to activate, press A !"?
find the savegame you want to backup, click on it, select delete .... oh, wait, .... something is wrong here, will you find the problem without a youtube video?
put your SD back to computer to copy gci file from /savegames folder to computer ?
use your browser to load google and search dolphin website?
find the link and actually download dolphin ?
install a program? launch it ? (hint : double click on the icon on your desktop
)
problem understanding that you have to launch the memory card manager ? it's probably located in "option > memory card manager" ohhh, that's funny, who would have thought it had the same name than what it actually does.
now you have two menus, with some option, where you can "create a new card" or "open an existing card" .... let me guess that if you want to create an empty card you shouldn't open a non existing one, so pick the "create" choice instead of "open".
then select something written on your screen which its word resemble the action you want to do, something like "copy" or ... "open gci"... "load" ... "inject" ? I don't know, something is probably obvious, and "noob friendly". no option will be named in braille, morse or klingon, all the options available will be explicitly corresponding to the action it can do.
or maybe you have issue understanding the filename you need to rename the memory card you created so that nintendont read it ? I'm pretty sure that you have to rename and replace the existing memory card that nintendont created on your SD or USB, not a different name, not a different path.
really, just try before thinking you will not succeed.
voila, a written (irony) guide without even trying myself or seeing the programs.
if you are stuck on a specific step, just ask about it.
but asking for a "full tutorial" we don't even understand what you really need (computer side ? console side ? all from learning how to launch a Windows program or how to use the file explorer? because, YES some users don't understand how to use explorer)