Requirements
1 Smartphone (Android Phone)
2 USB Cable
3 Computer (PC/Laptop)
1) First you need to connect USB Cable in your CPU
After that USB Cable connect to your Phone
2) then go to Phone>Settings>HotSpot and on it
then HotSpot Wireless & Networks
If you don't find ~Wireless & Network~
Click to More and check
3 Portable Wi-Fi HotSpot On
4 Tethering ON