Put the image you want to link from on the page, following these steps.

Then embed the image markup in the link markup. For example, to link from the caBIG® logo to the caBIG® website, you would type this markup, assuming the caBIG® logo is attached to the page:

caBIG logo

The result looks like this:

caBIG logo

To link to another page in the wiki, use the markup explained on this page.

To link to another image, use the URL for the image. To obtain the URL for an image on this wiki, right click the link for the image on the list of Attachments and copy the link location.

Further tips are available on the Atlassian website.