Yes, if you are a German citizen.
yes
I have UK travel document (blue) do I need a visa to visit canada?
If that travel document is a passport then yes you can. Without passport it wont be possible
I have UK travel document do I need visa to visit kurdistan?
Absolutely no! You have to obtain UK visa before going to UK
No
No
Yes, of course. It's in the EU.
No, Israel is of visa free travel for British nationals.
No
Not normally. Irish citizens have free access to the UK.
If having a passport for 3 years from German it will not be good. You will have to get a new passport to travel to the UK.