Im new the the whole Unix OS. I would like a breif description of the whole concept. I have heard it is open source so anyone can get the source code? Is this correct. Also is linux, Unix, Redhat all the same program just different versions.

Also I have a 486 200 MHZ computer I was considering installing Unix On Anything I should know before I venture off into this adverture.

Im excited about the concept just need a little claification.

Thanks

Sean