I'm trying to write a song for my brother can someone help please

If you are a 13 year old girl wanna have sex im 13 too btw im kidding but im 13 years old whats 10000 x 999999999999999999777777773333333111111100000000

Can anyone give me a website (without the link just the name or a screenshot of the site) to a tutorial for music production like fl studio where i can learn for free? cause i'm trying to become a solo artist but i don't know how to use the software yet.

What is the name of the song released by the artist "owl city" in 2009 as a hit single? (it was also one of the dankest memes of 2017)