You've come to the right place, we'll give you all the information you can stand and then some
Just a suggestion: It can be helpful if you add your car's particulars (commission number) to your signature. Contrary to common belief, they aren't all the same! And the year designation doesn't always tell the story, since the majority of TR3 changes did not happen at model year boundaries. Plus, the dealers were known to alter the model year, so it's at least possible that your "61" was actually made in 59, before the whole slew of small changes that happened at TS60001.
Welcome to the asylum.
PS, in case you don't have it, this is a good place to start on maintenance procedures. Several things are different than what it says in the workshop manual.
https://drive.google.com/open?id=0B2H2NJt34OffNjQ4MTkyNjItZTVmYi00M2U2LWJhYWUtMjEyZDgxMzUyNzUw
(Suggest you download a copy, in case I lose my storage or whatever. Let me know if you find any problems.)