What you'll do is upload to photobucket, then, after ur pic is uploaded, you copy the 'direct link' that is in one of the four boxes under the picture. It's the link that starts with 'http://'. After you copy the link, go to your page and click the 'insert image' button. The first line says 'image URL'. Copy the link into that line. Then type a description for it, then a title. Last, hit the 'insert' tab at the bottom left corner of the box, then 'publish changes' on the page editor.
Just an FYI, if you need to resize the image (if it's too big on your page) go to 'click here to edit', then right click on the image. Click 'image properties'. The box that you used to insert the image should pop up. Click the tab at the top that says 'appearance'. There should be two boxes with numbers next to the word 'dimensions'. Reduce the number in the first box (the second box automatically reduces) down by 100 and update. Publish changes, and see how much smaller your image is. If you still want it smaller keep reducing until it's where you want it.
Where ever you host your pictures,right click on your picture,click on properties at the bottom of the window that pops up,copy and paste the "location" URL in the image URL spot. Click "insert" then "publish changes"