Blog pictures.

In your Forum Control Panel make sure the setting labelled 'Use rich edit box when composing messages?' is set to TinyMCE. This will give you a toolbar like you'd see in MS Word for your training log and forum posting.

To insert pictures use the button in the toolbar that looks like this: 

The picture has to be on the web already, you can't upload directly from your computer to the training log. If you want to use a picture that's in your BT album, make sure that you get the url by right-clicking on the picture, not by copying what's in your browser's address bar. 

Aha, sweet.  Thanks marma.