I appreciate (as I'm sure my fellow "new-member" Leo does) the words of welcome and advice by the several people who have replied to this post.... PeterT's concept of investing in a very high-end concertina as a practice-motivator was most enlightening.
Many of your comments have reinforced my decision to skip purchasing a Stagi and go at once to a quality, intermediate concertina. As Richard pointed out, I hope to have the opportunity to see, listen to and perhaps try out several makes of quality instruments at Noel's school in August, with the intention of ordering one immediately after; hence the idea of finding a Stagi to rent. (I look forward to meeting you there, Richard).
Samantha, I wish indeed that I could rent an intermediate concertina to use during Noel's school, but I have checked around and none are available. The nice folks at Button Box regretted that they didn't even have a Stagi to rent.
But my observation that the people of this Forum are a unique crowd indeed has been proven by the fact that a Member has graciously offered to let me use his Stagi in preparation for, during and after the School, to include the time that it takes for me to receive my intermediate concertina. He lives a few hours away from me, and I hope to meet with him to pick up the Stagi in a week or two. What a generous gesture of support to a beginner!
Linda at Noel's school has suggested that I "sound out tunes and get used to the in and outness of the instrument" before I arrive so as not to come with a bunch of bad habits.... makes a great deal of sense to me.
I also like the advice about exploring different styles of music. Though I'm primarily interested in Irish music, I've really enjoyed some of the Morris concertina tunes I've heard online and will most likely explore that style as I go forward.
And thanks, wolosp, for the interest in my progress with the concertina. I would very much like to report on my experience at the school, and I'm sure will have many more questions to bother you all with down the road!
Thanks again, everyone.
Bob