Many self-publishers are
also first-time publishers with little or no knowledge of the laws
regarding copyrights, ISBN, EAN, and other such things. All those online
sites can confuse those new to publishing. Problem is, many sites
offering, "advise" to new self-publishers are run by scam artists
seeking to make a quick profit and leave you hanging. How can you avoid
being caught in their snares?
1.) NEVER pay money to buy a copyright! If you wrote the book, you own the copyright.
2.) NEVER buy an ISBN from anyone other than ISBN.org themselves! They are the ONLY ones who can assign your book an ISBN.