As a teenager, how should i stay safe? Read below...?

[Elise]

I am in middle school, I am also a girl... My parents bought me a kindle Fire hd gen. 2... All my friends have an app called kik. Since i am only in middle school, they checked my messages one night, they found that i had been sending relatively dirty messages. Now...I thought that my messages weren't thaaat dirty... but they thought otherwise. I haven't seen my kindle in the last week or so, and they said, just now, if I type a two page paper on internet safety, with three sources, they would give my kindle back... Any links/ideas? Oh... also I was talking with one of my friends friends, and he thought that i was someone who randomly looked him up... i lied to him and my dad said that i probably creeped him out...

[Daniel]

http://www.bbc.co.uk/newsround/13908828
http://www.fbi.gov/fun-games/kids/kids-safety/
http://www.bizzikid.co.uk/sosguide/safet...start.html

Are these ok