Help with adding Minecraft mods...?

Hey guys.

I've been on and off trying to add mods on my Minecraft (1.6.2) for a month or so and I have decided that I want the Aether II mod.

The problem is, every tutorial I follow makes me want to pull my hair out at the end when it crashes. I download Forge, I put it in, etc., and it won't work. So this is why I'm coming here.

I've "reset" my .minecraft folder to its original state. Now I need somebody (or somebodies) to help me in a VERY DETAILED, STEP-BY-STEP tutorial on how to install Forge and ultimately get the Aether II mod (a general overview on how to get other Forge mods afterwards would be nice, too, lol!)

ALSO: I would like to know how to make an Aether server. I think that downloading the Forge server is the same as the client.