Linux

what i know about the topic
i don't know a thing about this topic and what the word linux means

questions about the topic
1. what does linux mean
2. what does it have to do with technology
3. for who is it efficient
4. why is it important

links about useful information
http://www.linux.org/
http://www.redhat.com/products/enterprise-linux/
http://www.linux.com/
http://www.howstuffworks.com/question246.htm

what i learned about the topic

•  it is a computer operating system for free and open source software
• it has been ported to more computer hardware platforms than any other operating system
• leading operating system on mainframe computers and supercomputers
• linux also works on mobile phones, tablets, network routers, televisions, and video game consoles
• tux is the penguin mascot of linux
• a linux based system is a modular unix like operating system
• it is harder to manage than other operating sistems like Windows or Mac OS
• linux kernel was created by Linus Torvalds
• it runs on PC platforms
• it has a very big audience among computer geniuses and hard core developers
• it is a phenomenon and very popular
• it is kind of an adapted clone of a UNIX operating system
• current linux is very different from last years linux software
• when you are new it is better to sign up for a linux discussion board
• it provides data base and trading services for companies like Amazon US post office, and the German army, and many others
• it is the only operating system in the world covering such a wide range of hardware

how does the topic relate to my life 

this could apply to my life because it is an operating system like windows or mac os but, this one was made free for the entire world to use. it is harder to manage than windows or the other ones, but it is more flexible and has more configuration options than the other ones. if i ever want to experiment with operating system principles i can use it or if i want to have a great deal of control over my computer system i can install it and use it. 

questions i still have

is linux bigger than mac os?

is it good for teenagers or kids to use or is it to hard?

what to businesses use it for?