I took the above images over a five day span to show how much it has grown in such a short amount of time, all at the same time every night and at the same magnification.
Where is this comet and how can you find it? The above picture shows you where to look. Go outside just as it is getting dark, look to the North East about half way up from the horizon, you will see a bright yellow star like object, that would be Holmes, it is just down and to the left of Mirfak in the constellation Perseus. No one is really quite sure how long it will be visible, could be 3 weeks or longer, right now it is still in the growing stage, may even grow a tail who knows.
I'll leave you with a clip that a fellow amateur astronomer/astrophotography friend Tenho Tuomi made up of my images to give you a better idea the growth of this fascinating comet. Check out his website he lives outside of town and has some great astro images he has taken throughout the years. Just click on the image below and away you go.