This is going to tax most folk and as it's been written before I can't duplicate the web pages here.
If you are not willing to learn all about it then a router is best. Routers are less than 20 bucks now so cost can't be the problem.
Here's one way -> http://www.geekyblogger.com/2008/05/sharing-internet-connection-using-wifi.html
Again, there are many articles about this.
One of the best French door fridges we've tested
A good-looking fridge with useful features like an auto-filling water pitcher and a temperature-adjustable "FlexZone" drawer. It was a near-flawless performer in our cooling tests.