File types

[C# Programming]

Hi,

I am wanting to learn a little about how a program saves data ie saved files for a game or a program. Is there a link anyone can recommend so I can learn how to create a professional file type that i can use in my program?

I also have a program linguata that i am using to learn a foreign ********. The way the program works is that it has a basic file structure and for each different ******** it has an ogg file (containing all the sound data) and another "lesson" file that has the word/phrase in english and the other ********. it also has the specific time that the word/phrase appears in the ogg file. I want to be able to de-construct the "lesson" file so i can get the raw data for the program. with this i want to create word games to help me learn.

the file is located http://rapidshare.com/files/237060596/lesson[^ (http://rapidshare.com/files/237060596/lesson)]

is it possible to read it in anyway or is it encrypted?

thanks