I wanna write an e-book. What about copyrights ?

Hei guys, I wanna write an e-book, and sell it on clickbank.

I don't know what to do regarding the copyrights. I wanna register it somewhere, or something like that so that the customers won't be able to resell and stuff like that.

The ideea is pretty good, and it's about dating.

I am new to this stuff, but I really wanna give it a try. Any suggestions are welcome (not only about the copyrights).

If you're in the U.S googling "copyright" will give you all the info you need.

Thanks for the info.

I was thinking that you have to register the e-book somewhere, the ISBN and stuff like that.