Instagram is a social networking service. It allows you to rotate your photo, apply digital filter to photo, add effects, straighten the photo, add soft focus to photo and much more. It also allows you to share photos to Facebook & Twitter at a time. You just need to connect your Facebook & Twitter accounts to Instagram account. You can find and import friends from Facebook account, from your contact list, suggested users by Instagram or by inviting friends. If you want to add friends from Facebook account, then tap 'Options' > 'Find Friends' > 'Facebook Friends' and you will see all your friends from Facebook account. You can add friends by clicking 'Follow' button located next to their names. If you are looking for a step by step process to upload Photos to Instagram from your iPhone, read on.