YES - we are ALL here to help you!
And yes, I was nervous and anxious each time I got a foster, but you know - after a week it was like the dog had always been here, and I wondered what I had worried about!
I was even nervous about my first foster cat, and first litter of kittens.
I suggest you get Danny into the routine he is going to be in at your house for as long as you have him, and do that right away. HE'S going to be nervous and upset too! I'm told he's good with other dogs, and Briggs is still a puppy and a female, so it should go well.
Don't be shy to ask a million questions, and everyone on the other board will help you too!
To help get him adopted, make up a paper with his pic, and all his personality traits, and try to make it interesting and funny if possible and not just a list.
Put it up all over the place - pet stores and vet's offices etc.
I have a copy of Pitcrew's adoption application for you to use!