Hello and welcome, nerofans! I'm not quite sure what you're asking. Are you looking for a recommended distro, a basic introduction, a recap of linux philosophy, or a brief history? Whatever your question, I'm sure someone here will know the answer!
I think (rare occasion!) that he wants to know the advantages of Linux over other operating systems. From the style of English I would guess that it is not the OP's first language so you might want to keep that in mind.