First I will just show you what your end result will be:
Now I am going to tell you how to actually do this.
First, you will need one HDMI cable. The picture on the left is a HDMI cable. Of course the wiring CAN be different, it's just the ends are important. Next you need to find the ports in your laptop/pc and your tv that are designed for the cable. Stick both ends in. One in laptop/pc and one into the TV. The tv will automatically recognise your laptop/pc and it should work. Any questions just comment :)
Oh and good luck!! :)