This is my first post here on the site so I hope this works out for me.
I am converting an old site to Drupal and I am trying to make the site more efficient using this fine tool. The issue I have is with registration of members and classifying them.
Perhaps I should explain. I have run a reunion/contact site for a while. All the members are ex co-workers and most of us had lost touch over the years so I made it my mission to reunite them all.
To do this successfully for a large and varied group I would like to use a layered, multi-level system of taxonomies. (though I am open to suggestions)

So in example:

Office
London
New York
Paris- Department
Marketing
Accounts- Team
Revenue
Expenses- Position
Manager
Clerk
Teaboy- Started
1998
1999
2000- Left
2000
2001
2002

I would like to de able to add the details to their profile page as…

“Robert Millar
Worked in London, as a tea boy in the Accounts Expenses team between 2000 & 2001”

Using taxonomies then I could find bob either by looking at all the London employees, or by the tea boy list etc.

I hope this makes sense to you… if not please let me know!

I am looking for practical help, either a tutorial, a hands on code monkey what ever… please any help or advice is always most welcome.