Final Fantasy: Project Recrution

So i wanted to learn about Hex editing, so i did. but as of Now I'm a Junior hex editor so, i don't know alot about it.

Here's a video about the basics of the binary and hexadecimal system: http://www.youtube.com/watch?v=POaAAtxIELg

If you can understand that video after that you can hex edit everything without problem.