Getting a puppy!! Any advice?

I went on waiting lists for breeders last year. With all the delays I was told next year would be the earliest I could get a puppy. But I just got word that there is a puppy for me! I put a deposit down (!!) and I’ll pick him up when he’s 12 weeks old. I’m so nervous now. I’m scared I won’t be a good enough dog mom lol. I had dogs before but this is the first time having one on my own from puppyhood. I’ve read up on everything I could and I’m going to start buying supplies, finding a vet, etc. I will be doing puppy training. Any advice or words of wisdom? I’m scared and excited!!!