On Saturday evening I found a wonderful "when to plant what vegetable and how" website:
It's very good - it's organised by month, and by region, so you get a list of all the things that it's plausible to grow right now. And each of the vegetables has an individual page showing what months to plant it, giving a short description of the best way to plant it, then people can add comments and questions about their experience.
I got to gardenate.com via the Italian gardener - they're a seed supplier and I've discovered that they stock pimentos de padron the Spanish chilies for frying. So I'll be giving some of them a go later in the year.