Windows Phone 8 Basics - Share things on my phone - To share a photo or video to social networks

Some people share snapshots of important events, like birthdays and graduations. Others show off what they're having for lunch. Whatever you share, you have lots of choices for how to do it, including sharing photos to Facebook, Twitter, and LinkedIn. (Videos can only be shared to Facebook.)

In the App list, tap Photos Photos icon.
Find the photo or video you want to share and tap to open it. (To share a photo from an online album, you'll need to save it to your phone first by tapping More More icon > Save to phone, and then opening it again from the Saved pictures album.)

Tap More More icon (or tap and hold the photo or video), and then tap Share.

Tap the name of the social network you want to post to. Note

When you share a photo on Twitter, we'll store it in a public folder on your SkyDrive, and then share a link to it on Twitter.

Tap the text box to type a caption (optional). If you are posting on Twitter, the caption will appear in your tweet.

If you're uploading a photo to Facebook, you can tag yourself or other people. Do one of the following:
If your phone detects an untagged face, you'll see a box around it. Tap Who's this?, and then choose a contact or type a tag.
If your phone doesn't detect a face, tap Add tag Add tag icon, and then choose a contact or type a tag.
Tap Upload Send picture icon (photo) or Send video icon (video).