The best way is through the Writers Guild. You can now do it online, through their website. It's safe, inexpensive, and holds for 5 years which you can then extend to another 5 years.
Ir isn't necessary unless you feel there might be a need to separate them for financial reasons (selling to two different entities). In all likelihood you could register them as a collection with the copyright office.
Your country's copyright office.
The Copyright Office lists the authors, Mark Giannino and Chris Murphy, as the copyright claimants.
yes
yes
Sure. But keep in mind that since your screenplay was automatically protected by copyright as soon as you wrote it down, this company isn't really giving you anything.
Registration is not required for protection. If you wish to register anyway, you may do so through Access Copyright at the link below.
Works are protected by copyright as soon as they are "fixed." If you wish to register a work with the copyright office, you may do so.
It depends what country you are in.
No, but you can register it as a trademark.
Registering a Copyright OnlineYes, you can. Go to this website: http://www.copyright.gov/forms/ which is the Electronic Copyright Office.
To copyright quotes, you can include them in a larger work that you register for copyright protection. This will protect the quotes as part of the overall work. Additionally, you can also register individual quotes with the U.S. Copyright Office, but keep in mind that the quote must be original and meet the requirements for copyright protection.