Building A New Official Website

It is a new kind of things for me. Building a new website from scratch. Finally, my company has decided to become more serious in using every source that we can get.
We are launching a dot com. It is now become : cipta-prima.com.
I already made some email accounts for our board of directors, and now I am learning how to make a simple website.
It will be a highly appreciation if someone could give me some good advice on building a site. Many tools to learn, many tutorial to study, and more if you want to make it a real great sites.
I will inform you the latest condition about it.