Download it off the minecraft forums. Then drag everything in the file into the minecraft jar on winrar, or 7zip.
If you are looking for a easy way to install mods, someone made another Minecraft that can be used for downloading mods easier.
TooManyItems is a very helpful mod, it shows all the items and blocks including their data values.
no no and no
Multiverse is a bukkit plugin so there is no way to install it to your .jar
Yes there is 2 I know of first one is the latest edition of TooManyItems and second is singleplayercommands
Yes. There is a way of installing mod on minecraft 1.7 9.
For single player, yes you do, if you want to spawn them in-game, one good mod is toomanyitems. Another popular mod is InvEdit. Check out the link under "Sources and related links" below this answer for both links. However, if you are on a multiplayer server, you can type /give "Yournamehere" "Item ID" "Quanity" in the chat. This only works if you're a moderator.
No, it can't be completely turned off. However, pressing the 'o' key opens and closes the tab at the side. The only way to disable it is to remove the mod.
There many ways install this mod but the best way is the CSM installer.
MCdowngrader
apt-get install emacs
Yes, the easy way to install a side post battery in a 93 Cadillac is by following the service and manual instructions.