Hey Barry - welcome to LQ.
Note: it is a very bad idea to hand out your personal phone. Instead, set up a private email in
your profile. Members know to contact you by private message, and you can swap details there. Otherwise you risk stuff like identity theft and just plain annoying phone calls from anti-linux trolls.
Would your group be willing to be tutored by remote teaching methods?
This could be set up real-time on a schedule - your first lesson would be setting this up.
This would also be a lot cheaper than face-to-face, and allow you to draw from an international pool.
You should realise you are over-paying.
Specific questions would be answered free of charge and most linux geeks would give you a group discount. I understand a night-school tutor would expect $100-200 per lesson for example. There are also a lot of tutorials at different levels online - including some video tutorials. You are encouraged to sample these too.
And, there is are Indiana GNU/Linux Users Groups.
http://www.cinlug.org/ (central)
http://www.lugin.org/ (NW)
... they will know who to contact in your area.