Can someone explain these copyrights to me?

-I'm posting an online story, but it asked what kind of copyright I had for it. I don't know what any of them mean. Here they are, if anyone can explain:

-Not specified

-All rights reserved

-Public domain

-Attribution (Creative Commons)

-Attrib. Non-commercial (CC)

-Attrib. Non-commercial. No-dervis (CC)

-Attrib. Non-commercial. Share alike. (CC)

-Attrib. Share alike. (CC)

-Attrib. No Derivatives (CC)



I don't want to say the wrong thing, so I could really use some help. Please and thank you?(: