At the moment it is dusty, quite a mess, and a place to hoarding useless junk. I need to get up there with a duster and a broom, and then go through everything, decide what I need to keep, what I don't need to keep. Throw away anything damaged and not worth repairing. Find a proper way to store anything worth keeping, in a manor that is logical and useful. Find and repair any damages to the structure. Fill cracks, fix leaks.
I need to do something very similar to my flat.