In no particular order:
- Turn the old cow stalls into a workshop and home brewery
- Get a new front door and sort out the entry hall
- Build a dry stone retaining wall around the patio area
- Get the old pigsty into shape as a potting shed
- Get rid of the piles of earth dotted around the garden, and maybe excavate old limestone terraces
- Get a floor down in the attic space
Here's a rather long video to walk through them all.