First you need to post the pics to a host on the web. Usually you need an account at said host and usually it is free. Then, you get the link for the pic you posted and put the link between the handy dandy HTML (is it?) tags that are above as you post. The first little icon on the second row that looks like it has a framed landscape on it.
easy peasy.
If you want to post a pic already on the web somewhere, right click the pic and click on "properties". Highlight and copy the web address that is there and then paste that like above.
I hope that isn't any more confusing.
wrongway