you've stumbled upon my number 1 reason for coming to this board! After you leave the barn, you never leave w/o some sort of emotion ("That was a great lesson/ride!" being my favorite) and whether it's to vent, ask or simply go "AHH! That was great!!!!" ... you need a place to let it out (as to not drive your non-horsey friends too crazy)
There's nothing like the back to basics lesson.. Sure, some of it you might already know, but you learn everything a lot more thoroughly and inevitably pick up something you missed the first time around. (and sounds like from your non-formal training that might be a couple of things).
Congrats on finding a good home base!
Re: any of my advice - Happy to give my two cents, but not an expert... just a girl who loves riding horses!