Instagram is an online mobile photo-sharing, video-sharing and social network.
By September 2015, Instagram had 400ÃÂ millions registered users.
How to Sign Up
1) Take your iPhone/Android device
2) Go to the App Store/Play Market
3) Then install application and start it
4) You need to type email, and some personal information such as Username and Password.
5) You can also add telephone number and a photo of yourself
What can you do
1) To look up at users profiles. To follow interesting profiles
2) To publish new videos or photos and change them with help of different filters
3) To put hashtags to Your videos and photos, so the other users can find them quickly
4) To like interesting videos & photos of other users, to comment and to share them
Facebook bought Instagram
The service was acquired by Facebook in April 2012 for US$1 billion.