gmod 11
The latest version of the Aether mod is for 1.0.0
Garry's Mod 10. When people refer to Garry's Mod 11, they mean the up-to-date Garry's Mod 10
The latest. Minecraft 1.0
Because you dont have Mod loader installed Google it to find out what it is
you have to downlaod a mod seach for a mod loader and the mod its self
Because you probably don't have mod-loader installed. Try reinstalling it.
It works fine on a vanilla version (no mods) so it probably means you have a mod for it so you will have to wait for the maker of the mod to update it to the latest version.
No. I use that mod and I don't have mod loader.
To get the Blood and Bones mod pack to work with Minecraft, first ensure you have the correct version of Minecraft that the mod pack supports. Download and install a mod loader like Forge or Fabric, which is required for most mod packs. Next, download the Blood and Bones mod pack from a trusted site like CurseForge, and place it in the "mods" folder within your Minecraft directory. Finally, launch Minecraft using the mod loader profile to start playing with the mod pack.
Go to www.garrysmod.org and download the latest version of DarkRP.
Just search in google 'Minecraft mod downloader'
search it in the forums :)