How to share internet from a notebook to a cell phone?

Notebook with ADSL, having WIFI function. No Bluetooth. 2-How to pass the internet from a cell phone connected in WIFI to a notebook? Will that be more expensive? 3- How to set a hot spot? 4-How to have QR code in the cell phone? 5-How to access another computer home? I mean you have 2 computers and want to... show more Notebook with ADSL, having WIFI function. No Bluetooth.

2-How to pass the internet from a cell phone connected in WIFI to a notebook?
Will that be more expensive?

3- How to set a hot spot?

4-How to have QR code in the cell phone?

5-How to access another computer home? I mean you have 2 computers and want to enter in the other using the first one.
4 answers 4