This year - going to be trying:
Variety of greens - lettuce etc
All planted in raised beds constructed out of scaffolding boards or in large containers. Hopefully I'll be able to pick some old glazed windows/doors from the tip this year and add some roofed beds for bringing more on from seed going forward.
...and on the fruit side:
We inherited a few canes/bushes when we moved in and discovered a neglected veg/fruit patch - we have 'rennovated' them over the last 2 years and then added some apple / pear / plum trees as well as a selection of other bushes. They seem like less work than the vegs but do require an eye on pests and netting to keep the birds off.
Neither my wife or I had grown anything before we moved in 2 years ago - so don't profess any expertise but it's great getting out and harvesting and it's been a boon in getting our two daughters to eat their greens. On the 'tip' side - our Kale got completely ravaged by caterpillars in our first year but we found companion planting seemed to keep the rest of our crops relatively intact (borage, marigolds etc in the corner of each bed). I'll see if I can dig out the list of flowers we planted - looked really nice too!
Also found sweetcorn to be the biggest waste of time and space relative to crop. Followed closely by pumpkin / squashes...