To post a new ticket, click on the '+' icon just near the 'POST TICKETS' section in the left top of the page, and click on the 'Post New' link which appear on the    expansion of the menu.
All the fields marked a red star are mandatory and must be filled in, before you submit the ticket. You may have a number of departments to post your ticket to. Now select the department you want to send the ticket to. Now select the priority. The ticket title is your question title. You may elaborate your problem/question in the matter section. You can add any number of attachments with each of your tickets. The 'reference' field can be used to name your download for reference.
On posting a ticket, if the Support's knowledge base contains a similar problem, you will see the possible solutions for your question and will be prompted to either continue with posting or to accept the answer displayed.