Hey Write,
Good for you.
Some churches print their sermons and have them on a rack where you could pick them up during the week...and some print them on the church's web site. Those would be "safe distance" ways to get an idea of the ministers' themes, etc....
Or you might even visit an evening class or group meeting associated with the church, just as a visitor...
Take it slowly and easy and don't hand over your own good mind to anyone. Trust your intuition and let it guide you to kind, safe people. Try to remember what matters most won't be how slick they are with words, but how you feel around them.
This is just me, but I'd try to pay special attention to two feelings (it's a tough assignment for me sometimes to identify these right)...:
invasion: when someone (even a super-warm-acting someone) seems to be someone "swarming" me in some way, or
indifference: when I greet nicely and the smile doesn't reach the eyes, and my gut simply tells me, "this one isn't a candidate for friendship, but that's okay, I don't need to pursue..."
Good luck, dear. Hope you will enjoy it and be lifted.
Hops