Main crop potatoes can be harvested this month and need to be stored somewhere dry, and importantly, dark. The Hessian sacks sold by garden centres and on-line shops are ideal for storing potatoes. Potatoes can go green very quickly when exposed to light, even if left in a green house for 24hours they will turn green. To prevent this, you need to exclude light. Potatoes also need to be dry, if they are wet when you dig them up, put them somewhere to dry off but quickly as soon as they are dry take out of the light and put in sacks/somewhere dry and dark. The Hessian sacks are good because they are a natural fibre, but you can use other mediums just to avoid plastic or polythene, which will tend to trap moisture.
This time of year it's hard to avoid a glut of something, ideas for what to do with a glut of beans. All the beans family, French, broad, runners, and peas home freeze really well.
Courgettes are more difficult as they don't really freeze very well and I make a mental note, each year, to grow fewer plants next year as there always seem to be too many.