OK, I have downloaded the SDK, had a look and have decided that I would like to write a simple n900 app.
I understand that Nokia are pushing Qt going forward, my question is what should I start reading up on or learning in order to write an900 app?

I have some vb script skills and I once wrote a very basic visual basic program - and I mean basic!!

I would like it to be a language that I can use elsewhere, not just for n900 as I come from a windows background. If I have read things correctly, I understand that I can use pretty much any language as long as it can hook into Qt??
Should I be trying to learn C++, or even Ruby? What is the best way going forward as I dont want waste my time following dead ends..

Many Thanks