Ive been doing tutorials on how to instal mods and they only led into crashing my minecraft and i have to reinstal everything entirely to be able to play again.
Ive also been asking people ingame for help and they actualy showed me two entirely different methods to install mods and yet both failed.
One was to drag and drop the zip file content of the mod into the minecraft.jar and delete the META-INF folder.
The other was to put the zip folder in the mods folder and then try to activate it ingame.
The minecraft.jar editing way ALWAYS lead to destroying my minecraft data.
The zip file in mods folder method actualy made a zip file appear ingame in my mods and textures button but i cannot active it.