hi there,
i'm all new to this but i've been told that at this time of year you want be growing
cabbage
runner/broad beans
brocolli
sprouts
peas
spring onions


i'm sure there will be lots of people who can help much more than i can, also there are loads of books you can have a look at, i've been looking at 'vegetable growing, month by month' by john harrison which has been quite good.

good luck and happy gardening