We are wanting to create a website at work and I have been interested in learning how, so what better way then on the companies dime?

I know NOTHING about ANYTHING on building websites. I think I want to get a software package but not real sure what is the best. I would like to learn HTML, I think, but I am not sure what is the best format.

I am pretty lost on all this so any help would be great.

Thanks
Mike