You are allowed out to go food shopping or the pharmacy or hospitals in an emergency. Essential workers are not restricted of course. But even they are allowed to go only to work and back.
All bars restaurants etc are closed. No socialising.
Parks, beaches etc are all closed.
Breach is a fine from 60€ up, or jail or both.
Public transport is limited. Taxis too.
Airports are closed to internal flights from today.
If you are out you will need receipts to prove you were shopping etc. If driving to the airport or station etc a max of one passenger per car. You must be able to prove you are travelling onwards.
Essentially it's stay at home unless you have a very good, provable reason for being out.