Hi nicolaann,
If you want to post simply a link, such as
this, then highlight the text and click the world icon to include a link.
So if you wanted to link to your
gallery, highlight the word "gallery" and then press the link button. Copy and paste the link from your gallery into this box.
To post a picture from your gallery, you need the url of the image. At the moment this can be found by right clicking on the magnifying glass near your picture and clicking copy image location. Then when you click on the postcard icon above this is the url you will need for the image to appear.
To add a signature to your posts, click on "settings" at the top of the forums and then "edit signature" on the left hand side.
Hope that helps,
Amy