1) Create a Photobucket (www.photobucket.com) account (it's free). In the help menu it will explain how to email pictures to your photobucket account. You just send an email to <username>.<unique ID>@uploads.photobucket.com. It would look something like this: email@example.com. Put this addy in your contact list.
2) Take a picture and send it to an email address. Send it to Photobucket.
3) Login to Photobucket and your picture will be there along with the code to put in a post here (cut and paste) to display the pic.