go to your account manager.  If you have written any reviews, open one of them, your ID number will be on it.  As a hobbyist, you really have no need for your ID number, and nor does a provider need your number.

Swim

"Desperatevirgin" has been posting desperately to the Newbie, General and NY boards (any others?) for several weeks and surely seems to be a client, or is desperately trying to become a client.  Advice has been polite and plentiful but, as someone (WB) said on the NY board, "God! If you can't find a provider in NY you couldn't find ugly in Tarzana."  To anyone reading this in Tarzana, I'm sure that WB was not referring to you personally,  

My take was that DV is little TOO desperate, probably a little too young and immature and needs to calm down and take things slowly.  

Given that ... If someone is asking you for your TER ID, they almost always mean your handle or TER name which is "Desperatevirgin" and not your membership number which is only for internal TER admin use.  Whoever is asking probably wants to see if you have any TER reviews or maybe read your recent posts to get an idea of what you are like.  

At some point, perhaps when you are no longer a "desperate virgin", you can ask TER Admin to change your handle / name to something else.  "No_longer_a_desperate_virgin" perhaps?

I'll just say it again: Calm down, DV.  The opportunities will surely come your way