set up questions

Now that I have the file set up are there step by step instructions?

The video helps but it says to go to network settings to to select how the admin area should be displayed. Well... I cannot find this super admin option settings.

Then it says to go to tools, but it only shows in my site admin account and not others.

I would like the ability to configure domain names for my users as well.

Also I am uncertain what this means? If your domain name includes a sub-domain such as "blog" then you can add a CNAME for that hostname in your DNS pointing at this blog URL. If you want to redirect a domain you will need to add a DNS "A" record pointing at the IP address of this server: IP not set by admin yet.

I am confused!