If you are in the app and viewing content in a feed, shareable content will have a button in the bottom right for sharing. If you have opened the shareable content card, the share icon appears in the upper right of the opened content card. Depending on your phone maker and version of the application, the share icon may look like:
or or even
After you select share, a window will pop up asking which app you'd like to share to. The share options are based on applications installed on your phone with compatible "native sharing", such as Twitter, LinkedIn, Facebook, Gmail, Buffer, Evernote, Notes, etc.
Most applications will present a preview of the share. Some content cards will have pre-populated share text that has been written by your Program Manager, which you can use to post quickly or customize to capture your own voice. If there is no pre-populated text, make sure to write at least a short note and if your program has a hashtag, include that hashtag during the share. Watch for character limits, and click to post your share.