RadioCatastrophe

Hello, I haven't used SL since I joined IMVU back in like 2004/2005 and this is my first time being back since then ._. Anyways, wondering how to create, edit, etc items on SL. First off I'd like to edit this: deer mod and if there's any programs (other than editing programs) that I need please feel free to leave them. I've searched google a few times and found the SL wiki but it kinda confused me ._.; Simple tutorials would be nice until I get the hang of it. P.S. sorry if this is in the wrong forum :c