You are also going to need a thermometer temperature
You are also going to need a thermometer, temperature is fairly critical in the brewing process. Again, go to a brewing supplies store and you will find quite a variation, but I would go for one at least 12 inches in length, or even larger if you can. Especially if you have bought a large mashing vessel. They are easier to read anyway. By the way, a spare thermometer is always useful. They can be dropped and broken! You will need a fermenting vessel for the brew after the yeast has been added. It should have a decent fitting lid and handles for lifting. When I started I used a plastic dustbin (garbage bin) from my local hardware store. It was bright yellow and I thought it was cool. Only later did I discover that the yellow colour was due to the use of the heavy metal cadmium, pretty toxic to humans. This cadmium would leach out into the brew due to the effect of the process. Well I got away with that one (I think). But the lesson here is to only use containers guaranteed to be brewing friendly. I would favour a five gallon plastic container sold by a reputable home brewery supplies store.