How to Justify an Evaluation on a News Medium?

[lil SYNN]

i have an essay due about Justifying an Evaluation and i have to do it on a news medium. I chose CNN as my medium but i just dont kno how to get started. i dont kno how to do three topics. i got HOw it differs from other news networks but thats it. i need to more and a thesis statement. This is very hard for me because i dont kno how to write college essays. any help would be appreciated as i am about to fail