I have a Mac and I use Mods, I am not very good at putting mods on and have looked at endless youtube video's. I found one where you make the minecraft.jar into a folder then drag the files in but that only works for toomanyitem's mod. So tried something called ModCraft but soon found out it is only for windows. So I was wondering if there was a equivalent.
I happen to have written a few scripts that aid in the mod installing process. You can find them here.
Unzip the file and you'll find two .command files, open.command and close.command. To install some mods, double-click open.command. It'll run in Terminal and will create a folder called 'minecraft' on the desktop. Drag in the class files for the mod. Then double-click close.command. That's it! Now just open Minecraft and have fun using your mods.