How do I patent/trademark/copyright a Comic/Manga/Video Game Media franchise?

I am 25 years of age. I was planning on making a fictional work as a franchise. And I want it copyrighted. Before I ever start on spreading my ideas to possibly hired freelancers to create artwork for me, I know that such ideas would be stolen or leaked once it starts. Same applies for video games. How do you file a copyright ? Does it apply to most foreign countries? To whom do I contact & ask for advice? What are the requirements? How much does it cost to own such franchise or brand?