Making Leaf Mould, sometimes referred to as "gardeners' gold", is the easiest thing. All you need is a good rake, and patience (something gardening teaches you, anyway!) And then, fungi will do the work of decomposing and breaking down fallen tree leaves into a rich, dark brown mixture that's wonderful for Mulching and feed you plants and sows good nutrients.
There is one job you have to do, though! On a crisp rather than sodden day in late Autumn or early Winter, arm yourself with a rake, and gather fallen leaves into heaps in your garden.
Fill large bags --garden sacks or Ikea shopping bags, which work very well- with Autumn leaves. The bags shoudn't be packed as the air needs to circulate to allow fungi to develop.
Place the bag in a hidden spot if you prefer, but not sheltered from the rain and elements, and wait.
After a year, perhaps earlier depending on which tree the leaves came from, some take longer to decompose, you should have a beautifully rich and dark Leaf Mould.
Scoop it into large basins or buckets, and allow to dry in a garden shed or garage if it has rained a lot and it is wet.
Then, your Leaf Mould is ready to use, to feed your soil before sowing seeds or planting seeds, to amend it once your vegetables are growing, or to use as Mulching /to protect your budding tulip bulbs on a cold ad snowy day like today! Happy gardening, friends!