These can be one time rights, all rights, or first rights. This all depends on the contract that is entered into by the two parties. For a book contract, an author is either paid in royalties, advance, or in some case both. An advance is something paid to an author either before the book is published or before it is written. It is an advance of money agaihe future sales of the book.
Royalties are monies paid as the book sells.
The author gets a percentage of the price the book is sold for for each book that sells. For contracts that consist of both advance and royalties, an author needs to make the amount advanced in royalties before making more. Once the amount is reached, the author will then begin earning royalties. Now let's talk about the different time arrangements that can be made that deal with when an writer is paid. These mostly concern smaller works.