I'm a first time user with this OS. I cannot log on the wireless internet or know how.

In order for someone to assist you would need to give out some information. Which OS? What type of wireless interface? What have you tried?

Can you give us the output of the following command:
/sbin/lspci

You can simply follow this guide:

Connecting using Network Manager

Network Manager (System → Administration → Network) supports Roaming mode. This allows you to connect to any available wireless network in range.

1. In the Taskbar click the Network Manager icon.
2. Select your wireless network from the list.
3. Enter your Network Key.
4. Click Connect.

Manually connecting

1. Select the connection and press Properties.
2. From the Network Name drop down box choose your router. If it is not shown your router may not broadcast its ID. In this case manually enter the ESSID.
3. Select the Password Type and enter your password.
4. If your ISP gave you a static IP address then select Static IP Address from the Configuration box.
5. If your router assigns IP addresses then leave the Configuration as Automatic Configuration (DHCP).
6. Click OK.

I'm not sure what you meant to give you the output command /sbin/lspci. And also, the wireless connect from the taskbar is faded, so it cant be clicked on.

It probably means that the drivers for your wireless card are not installed.
Find the program called 'Terminal' which is a command line interface and type:
+ enter
You can copy and paste here whatever came up on the screen.
Also, you can give us the output of:
and