Once you’re logged into Twitter, simply click on the blue ‘Tweet’ icon and you are faced with the composition box. This is where you can type in your tweet and click on tweet button.
How to tweet an image
Adding an image restricts the number of characters you can use in your written message, the number remaining for you to type is displayed next to the ‘Tweet’ button that you will click to send your tweet.
On a computer, you'll have to find and save the image you want to tweet first, before clicking the camera icon to search your hard drive for it.
How to tweet video
Twitter now lets you tweet up to 140 seconds of video. Simply press the camera icon under the new tweet field and then choose the camcorder icon. Press and hold the red button to record.