Welcome to the forums! 
About your our picture issue. You will need to use an online picture hosting service like Photobucket or imageshack. I use photobucket so I will speak to that site. After you upload the picture, you have an option to share. I choose the direct option and that is the line of code you paste into the source line. Then I use 500x350 for the picture size.
Hope this helps. Pm me if you have questions