I haven't seen a dedicated Introduction area but, you know us damn yanks. Short on proper formalities.
Most of our members just jump in and have at it.
If you have the old Iron Barrel the best place will be in the "Bullet Classic Models".
The AVL and UCE forums areas are pretty self explanatory.
The "Vintage Royal Enfield/Indian" could cover a multitude of things but it generally gets the pre 1975 bikes.
Oh! I forgot to say Welcome aboard Yilt.
Have fun.