Fly Mod = You can fly X-Ray = You can find really easy diamond & co Light mod = You can take every time light on
Download .minecraft : You must login or register to view this content. Download MinecraftSP (if you don't have) : You must login or register to view this content.
Tutorial :
First download Minecraft Beta, and click on "force update" Then go in root of minecraft, and delete ALL, so open "Run" and write
%appdata%
Then delete folder ".minecraft" and put the new ".minecraft"
Comand :
Fly mod : F X-Ray : X Light : C
NOTE : If you don't have version 1.6.6, use "force update"!