You have to follow the instructions VERY closely.
You also have to have the 1.1 version of the mod. Every time Mojang updates the game you have to wait for the update from the Modder. It may take a few hours or days for the modder to update it and put it on the site to re-download. Make sure you go back to the site you got it from get the updates or any other information.
download it then chuck its contents in a mods folder in minecraft .jar
Minecraft mods are always free.
There are mods that add lego.
It allows you to add mods that require ModLoader to your Minecraft
There are no mods for Minecraft PE But it would be cool
up to this point, i've never heard of mods costing any money? they're all free, as long as you have minecraft installed (which you can also get cracked for free)
As for now, chocolate is not in Minecraft. But you can install mods to add chocolate.
you can get minecraft mods and textures off the minecraft mods website.
To enhance the game, and add new things into it.
None
there are no mods in minecraft pe i hope there will be
Yes, most Minecraft Mods are updatable.