|Oh dear, you have a steep learning curve ahead of you.|
A driver is a piece of software that allows the Operating System to interact with the hardware. Drivers are specific to the hardware that you have, very specific in some cases. So first we need to know what hardware you have before any can point you in the right direction fir drivers. That means the manufactures name and the model number.
If it is a common make of computer like Dell, HP Acer etc drivers can be obtained from the manufactures website.
You will need drivers for things like video card, sound card, and network interface card. It is the network interface card that connects you to the internet.