Sounds like you have a wonderful boy there despite his past
I know everyone worries when they first get a dog, it's only to be expected, but in a few weeks when everything has settled down and he realises he is there to stay you'll look back on this time and wonder why you were so worried.
Its great that you have signed up to training classes. You will both throughly enjoy it.
Pat yourself on the back for doing a great deed in rehoming this boy and enjoy getting to know each other. You'll soon wonder how you ever managed without a dog in your life before LOL
What have you called him? And please post some pictures of him so we can all meet him on here
