If you want to accomplish repairs on your own Triumph TT 600 then it is always recommended to own a Workshop Manual to keep just for personal reference should you want to know ways to remove a specific part like the Drive Shaft and install it again safely.
Triumph TT 600 Workshop Manuals can provide identifiable diagnostic wisdom on your car therefore if something is playing up it can help you understand what the issue is and tips to repair it. You will be able to assess if this can be done yourself or that the job is too big it is possible to make a booking for your TT 600 in to a trusted mechanic.
Triumph TT 600 manual