I was wondering which type of HDMI I should use to connect my Raspberry pi to my monitor, it says HDMI on the side but I dont appear to have any cables of the type, I would like to buy the cable but I dont know which type it is.
You need a HDMI cable with a micro HDMI male connector on one side. There are also cables available with mini connector but that will not fit. For example you can use one of these hdmi micro to hdmi cables.
As corrected by some comments I was wrong with a Pi Zero. This model uses a mini HDMI connector as shown at https://www.amazon.co.uk/AmazonBasics-High-Speed-Mini-HDMI-HDMI-Cable-Black/dp/B014I8UEGY (Thanks to @Dougie).