Answers:
The best process is to gain a suitable DSL/Cable/Fiber internet nouns, setup a apposite wireless router. Connect your computers to the see.
All within adjectives, it really isn't all that simple but it isn't difficult any.
Wifi simply replaces an ethernet cable beside a radio signal.
Here is a great "bring back started" article.
http://webworkerdaily.com/2007/08/31/set...
http://webworkerdaily.com/2007/09/17/wwd...
It is complete and have adjectives the info you inevitability. There are masses others available which turn into more detail and advanced useages etc. But to attain started this one will do in good health.
Look for online tuturiols on roughly.com