To post pics,
Step1: Sign up to photobucket or imageshack
I use imageshack for no particular reason.
Step2: After you follow the instruction to sign-up & once completed.
You can upload your images/photos to/from whichever you sign up to.
Following is for imageshack.
Imageshack once you login
You will see Media Upload Button on top section. Like so...
Click Media Upload if it is not selected.
Click Browse & look for your image.
Select the file & click Open
Click Upload now