When I first read this thread, I though, "maybe a little nervous.." Now that I've had time to reflect, umm.. I was a complete wreck. I remember being worried about finding a vet, debarking, finding a trainer, what to feed. The only stuff I wasn't worried about, just kind of knew what to do, was buying supplies such as a crate and toys. After seeing my puppy in person a couple times I was worried about her being too shy, so I put a lot of research into socializing and training her. I was really determined to have a dog that I would be able to take anywhere and not have issues with her being fearful. Luckily by the time I brought her home, she was pretty full of herself and I wasn't so worried about her being too shy.
I will mention that a couple things happened when my dog was a puppy and it kind of made me a little paranoid. 1- there was the dogs who were dying from eating chicken jerky. I was extra picky about treats, didn't want to poison my puppy. 2- there was a recall of a Petco toy because a dog died from toxins in it. This made me a toy snob, and I am very selective of what kind of toys I buy my dog. 3- Diamond pet food recall. My dog's breeder fed Taste of The Wild, so that's what I fed. When the recall happened, I got a little crazy trying to find a new food. Now I feed raw, so it's not a major concern. Still paranoid about treats.