Welcome to the Forum! I'm sure you will enjoy your time here, though there are always both good and bad times. It's all a learning experience. While there are always a few negative people in every group, I like to think that for the most part the members of this forum are very friendly and insightful. I've enjoyed a lot of great years here.
That's fantastic what you've been able to do for your horse. They really do seem to understand what we do for them and never forget it. I think they really do try to repay us to the best of their abilities when we've done well by them.
There is so much to talk about when it comes to horsemanship, as I'm sure you know by now, but if you have any specific questions feel free to ask away, whether here or in a new topic elsewhere. I'm sure you'll find plenty of help!
In the meantime we'd love to see pictures of your guy!
He must be a very strong, determined fella to get through what he went through and make such a successful recovery. He sounds a little bit like my first horse in some respects, he was the same breed and colour and cut late so kind of studdy at times but all in all still a great horse for me in my early beginning years.