I think that you have to make it on your crafting table.but I'm not a mod fan,so I'm not sure
Sledgehammer? That's a mod! Download it on the minecraft forums.
No it is a custom built map
nerdboy64's gun mod
how to waypoint is you have to download the waypoint mod and install it in minecraft. when you have the mod installed, you press the waypoint button(i forgot what button)and you press submit and you have a waypoint at where your standing
Some might, but an adventure map is a MAP, not a mod. Just search for "adventure map" on Google or the Minecraft Forum.
download the virus mod then look for it
A mod is not a part of the game. It's a feature made by the users.
The map can be a mod, but default is just a map download
It depends on the mod. If the server is using something like a world changing mod, say like, "Better then Wolves" mod then yes every one needs it. If your using something like an individual mod like the compass mod "Rei's Mini Map" then no one needs it to connect to your server.
It is not legal to sell mods, the Minecraft Australia mod or map can surely be found for free.
If you mean from a map view then you can't unless a server has a website for that. If you mean ingame then Optifine mod.
Nope. You HAVE to download a minecraft mod to have it.