yes the max range is 30 ft i think
You can connect your laptop to the Internet with a cable modem, sure. You will need an Ethernet cable to do that. If you want wireless internet, you will need a cable modem, and a wireless router as well.
Just get a wireless 802.11 adapter for the laptop to connect to the internet.
Yes, you can.
Wireless high speed internet allows you to use your laptop without having it connected to the internet via a cable hook up. You can use your laptop anywhere in the house if you have wireless.
Subscribe to an ISP for internet such as IVC Telecom and then connect your laptop to the modem with an ethernet cable or connect wirelessly using wifi, assuming your laptop has a wireless network card.
A wireless Internet connection allows you to go on line with your laptop without having to be connected to the router with a cable. You can go sit outside in the garden and browse on the Internet.
Is there a tethering cable available so I can connect my internet phone to laptop to view larger screen
In general, cable companies don't sell wireless internet service. Check the cell phone carriers that serve your area for this service.
If you want to have internet on that laptop you need to be connected to internet provider which usually happens directly (connected to the modem) or indirectly (connected to the modem through wired or wireless router).
If you don't have a wireless connection, then yes.
You can get service through your cellphone provider. With a cable I hooked my phone to my laptop and got internet when traveling.
Today all laptops come with at least one wireless card. If you are using a cable you might want to get a wireless router, which will allow you to have internet wirelessly.