Hi Isaac,
Thank you for posting your query in Microsoft Community forums.
From the issue description, I see that you want to know how to share Internet connection in Windows 8.
I will surely help you with this.
To share Internet connection with other computers, you may have to configure the network connection of your computer to allow the same. Follow these steps to perform the same.
a. Right click left bottom corner of the desktop.
b. Select Control Panel.
c. Select Network and sharing center.
d. Click on Set up a new connection or network.
e. Click connect to Internet.
f. Click Setup a new connection anyway.
g. Choose how you want to connect.
h. Put check mark for Allow other people to use this connection.
i. Click connect to complete.
Let us know the status of the issue after performing the troubleshooting steps. If you need any further assistance or information about Windows, I will be glad to help you. We, at Microsoft strive towards excellence.