They did. Revive. Drying winds

First thing to build is a double compost: one for building, the next for turning into. We make good compost, it takes about 2-3 years as we have deep bins with lots of air rather than a closed hot system.
2nd thing: consider water collection as many plants require lots of drink.
DH will be taking down the very old raised beds: those are planks fixed 12-15" higher than the ground which gives plants deeper root runs.
We grow: carrots, peas, all types of beans though the runners didn't get away this year

....... spuds are as cheap to buy. Leeks sometimes; always parsnips, red beets and Welsh onions. Asparagus bed will remain intact and requires regular weeding.
Peas and beans need quite a lot of space which is sheltered from wind but gets plenty of sunshine. Bamboo poles make good wigwams for legumes to run up.
We have apple and plum trees, the squirrel gets the walnuts and cob nuts

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We have tried various types of squash: corgettes soon grow into marrows

and we had a squash that rambled around the garden a few years ago - followed closely by slugs

. Our garden is too over-hung by trees to be successfully with tomoatoes, that doesn't stop DH trying each year

. Squash etc. keep well in a cool place once cut.
I moved the chilly plants inside this afternoon in case of frosts, they need a Very Good feed of baby-bio. Job for tomorrow.
Never grow what you won't eat. Grow what you use a lot of. Make a list and check either on-line or on seed packets or catalogues when to plant etc.; I have a specific calendar for gardening. Lots of plants can be grown in layers, i.e. staggered in age in order to get repeated pickings [clear as mud?]. Garden centre often have education evenings/afternoons for beginners. Some villages have gardening clubs to join.
If things don't grow we buy plants from garden centres, I don't have the energy to pick out seedlings any more. Once you get going and find out what grows well then experiment: for example if you like beans, try a different type along with what you know will survive. Make sure you have plenty of space in the freezer for good years ;-)
I do remember Grandad digging a trench in the Autumn into which all the peelings from the kitchen went covered by newspaper/cardboard to make a base for the next years' beans or peas.