2015 Vegetable clock ticking!!

Hi all!

Newbie to all of this but stumbled onto Permaculture and want to implement it everywhere we can!

We bought an old olive farm in Italy last summer and have spent months clearing the terraces that have not seen th light of day for over fifty years of bramble and brush and as of last week we now have space for growing some vegetables but how to prepare?

The soil here is very very soft but you can't dig too deeply without hitting stone of various shapes and sizes.

We have edged our bed areas with some felled tree trunks and made some cold frames with our old windows so we can get seeds at startee now at least but soon we'll need to plant into the beds i guess but how best to start? We are definitely wanting to build no dig beds but do i till first year and mulch thinly before planting?

Thanks in advance for any advice.