I suggest you read this link thoroughly http://www.charlesdowding.co.uk/no-dig-growing/no-dig-growing-preparation/
With choosing which materials to use, which order to lay them in, which compost and how much… it depends on each person’s timescale and resources. The link give many pointers.
Mulching now and starting to plant in spring, polythene is a quick option.
Have fun with it.
