I have followed the tutorial here ,http://www.minecraftforge.net/w/index.php?title=Key_Binding, and i am at the last step,

 

The registration snippet:

FMLCommonHandler.instance().bus().register(new KeyInputHandler());

 

but i am rather new to modding and i have no clue where to put the code, can someone help me?

 

 

If this tutorial is outdated and doesn't work anymore (as far as i could find, it doesn't clearly state that), can someone show me or give me a link to a tutorial?

 

Thank You in advance for helping me!

Init(or Load) method in your Mod class will be best, but you can do it in PreInit or PostInit.