Do you wish to connect your PC, laptop and phone using wireless networking ? Its too simple using a router. Now a days lots of company making product with wifi system so that without wire you can enjoy the internet and networking. Netgear and TP-Link are two most popular company which providing good quality router for networking.
You just need to purchase a router and install it at home or office. In router you also have option to connect RJ47 connector with wifi system. In router turn on the wifi and connect any lan wire on back side of router. Just turn on your laptop and install the CD which comes with router and set the password so that nobody can use it without this password. You can run any number of laptop using wifi in your office or home. Also you can run your iPhone, Smartphone which including the wifi options without plugin any wire into pc or any device .
Its very safe and without any wire system. Its saves money also, to purchase the networking wire and install it into home and house and takes too much space .Even your neighbor and friends also can use it without going to cyber or else. Just give them the password of router and then they connect there iphone using wifi service. Make sure all wifi devices on when using the internet and networking to share files etc.