How to connect two computers and connect them with Internet?

How to connect two computers and then connect them to the internet?
How to connect....
1- Two computers:
We are connect two computers together to share Internet, printer, scanner, files, and even programs

We can do it through either way:

1- Use A Crossover Cable And Two Network Cards.Two network cards are installed in two computers.Then use crossover cable to connect them.

2- Use a Phone Line and Two Special Adapters Sold as "Phone line network Kit". Two adapters are installed in two computers. Then use existing Phone line to connect them.

Connecting Two Computers via Wireless:

1. Wi-Fi
   
2. Bluetooth
   
3. Infrared

Several types of fixtures exist for home networking:

• Hubs
• Switches
• Routers

2- Computer with the internet

Before you can connect to the Internet and access the World Wide Web, you need to have certain equipment. In brief, you must have:

-A computer (preferably running an up-to-date operating system):
-A modem and access to a telephone line or a local area network (LAN) that is in turn connected to the Internet; and connection software that will allow you to establish an account with a service provider and access the Internet

You Need:

Modem: This converts your digital computer information into analogue telephone signals. Phone Line: his may be your biggest expense after the equipment.

Internet Service Provider (ISP): ISP has a permanent connection to the Internet.

ADSL: a newly standardized transmission technology facilitating simultaneous use of normal telephone services, data transmission of 6 Mbit/s in the downstream and Basic-rate Access (BRA).

ADSL facilitates the simultaneous use of normal telephone services, ISDN, and high speed data transmission.

Another advantage of having an ADSL line is not missing calls while you're online, as both voice and data can be transferred at the same time.