Wow this is so awesome and simple to make curd at home.
You need around 2 kilo milk and 2 spoon of curd mix well together and lid it up for 5 hours. You will then have the whole milk converted to curd.
If the weather is hot the milk should be cold and if the weather is cold the milk should be luke warm and also the lid should be covered with a warm cloth so it doesn't get cold.