Write an article about Photo stream

Num. of articles: 1
Words per article: 1000
Information for the blog/website: technical blog
Industry: Internet/Software
Topic: Photo Stream Introduction
Tone: Informal/Casual
Outline & Structure: part 1. how to set up photo stream on iPhone (step-by-step guide with screenshots)
part 2. how to disable photo stream on iPhone (step-by-step guide with screenshots)
part 3. how to delete photos from iPhone photo stream (step-by-step guide with screenshots)
part 4. what is photostream (give a definition, how it works, and what's its functions， how to share photos in photostream with your friends)， what's its difference between Photo Library and Camera Roll. ）
Extensive research needed: yes
Extra notes: 1.extra research is needed;
2. Unique article with more than 1000 words.
3. Absolutely don't plagiarize. I can check it out.
4. Send in Doc with required images.
5. Finish in 4 day.