What is Torjan? (for Noobs)

What is Torjan? (for Noobs) 

Torjan is a program that, which will infect your pc with Virus.
What Torjan Can do with your Computer?
1.It Can disable your Task Manager
2.It Can disable your Folder Option
3.It Can disable your Registry Editor
4.It Can disable your CMD Command Prompt
5.It Can Hack your Computer and Remote Control of the Computer,
6.Hacker Can steal all passwords and exploit any file from your pc.