1. Write new post
2. From post menu bar click “Add an Image” button if you have never upload any image to your image library. Accepted image in wordpress.com is JPEG and GIF, which mathematically compacted. Some explanation regarding image availability can be found at wordpress help menu.
3. After clicking “Add an Image” there is two option to insert image :
-first option is upload from your computer, if you choose this method, simply browse image file from your machine.
-second option is by entering URL link of your image.
Whatever option you’ve chosen, then you should decide where the image will have it’s position, center, left, right or bottom. choose one of those option.
4. Upload! then you will find that your image appear in you post (surprise!)