really dont care/ dont really care.

[J_Caesar]

Could someone please tell me the difference between:
1. I really don't care about it.
2. I don't really care about it.
My guess is :
1. I don't care at all.
2. I care but not much.

[Anglika]

your guess is good.

[J_Caesar]

Thank you Anglika. I was not sure about the meanings.
Edit: I have a similar question:
1. I can also/only help you
2. I also/only can help you.
What are the difference between them?