How to add mods (and use them) in Minecraft Cracked?

I have Minecraft SP Cracked (1.5.2) and i want to know how to add mods and don't forget how to use them too. Also it would help if you give me a couple of links to mods. It would mean a lot to me.

zahin

Most mods come with a read me file with instructions on how to install.

A GingerMonkey

By buying it at minecraft.net.

james