New to Oklahoma wilderness - any tips?

My bf and I came from Oregon. We’re not the most nature-y people but want to get out there more and explore. We visited Stinchcomb wildlife refuge yesterday and felt unprepared. We left early because we were being eaten alive by mosquitoes and noticed a few ticks, spotted a snake and a suspicious looking spider.

Is there anything you can tell us about Oklahoma wildlife and any precautions we should take when going out? Also any must see destinations for exploring?