Building Beds to plant my vegetables

Hi all, I'm new to the forum so I'm not sure if this is the correct place to post this question, but here goes.

I have a space available to grow some vegetables, about 20ft by 4ft give or take, problem is it is all concrete with no real way to remove it.  So I'm thinking of building some large raised beds out of wood.  They will sit a few inches off the ground and be filled with compost.  The problem I have is what type of compost should I use?

I have just read John Harrisons book 'Vegetable, Fruit and Herb Growing in small spaces' and although it is an excelent wee book the thing I would have liked to see is a quick referance to the type of conditions various vegetables prefer, ie soil type, watering, spacing, feeding etc.

When I build the beds I will be making them in individual sections, probably 4ft by 4ft depending on the timber I can get.  I really just want to know what I can plant together so that I don't have to make it all complicated for myself 

If anyone has any ideas or tips I'd appreciate it, but please remember I am new to this grow your own thing.

Thanks
Jim

The size of space you have will take some filling! Have you thought about where you can get that amount of material from? If there is anywhere near you that can deliver free or cheap manure that would be a decent start depending on what you plan to put in the beds - not carrots. Good luck.