I would build raised beds .......... easier to keep weeded ! At least 3
high : can't think of the word I need
. Railway things ......... though avoid any wood that has been creosoted . Or go to the local tip to see what's available, always remembering that they will need to fit into the car ;-).
Tomatoes - too late to grow this year, need a deep root run and plenty of feed and water. Potatoes are great for clearing the land as they require good digging, have deep roots and can be grown in bags or garden. Don't harvest until after they have flowered. Onions - we have Welsh type, which are dug into a spot and used as required: taken from the ground, split and the remainder dug back in. A bit like Spring onions.
One day I'll remember the word that I'm searching for