It has been awhile since I used Linux and XaraLX. I believe all the tools should work the same as in the Windows version. The limitations as I recall are in the Galleries, import filters, and export filters.

Workbooks 30 and 31 at http://www.xaraxone.com/html/workbook.html will teach you how the tools work. Although written for the Windows version the XaraLX tools work the same. You will need to scroll down the page to get to the two workbooks I mentioned.