Once you have logged in to Tugger, if you do not see your Tugs then select My Tuggers; any available will be displayed as shown below.
Note that the Tugs below display the text 'View Details', which is correct when you have Tugs available; further, the number of tuggers you have out the maximum allowed is also displayed. If you have no Tuggers, then you will see the text: 'Add This Tugger'.
Select one to access that particular Tug.
If you haven't added any Tugs - available under Tuggers - then the text displayed will be: 'Add This Tugger'. The guide for setting up a Tugger is available here.