Go to the disasters link on the sidebar to your country and there will be a set of options to examine the damage, the progress of your recovery and the relief supplies you need to recover.
You can set up the relief supplies yourself, send them to yourself from another country, or beg other players to send them to you. The first section of supplies show how many are needed every month, and you should have about 12 months-worth. The second set are needed only once, so just set up what you need.
It will take about a year to recover if you have sufficient supplies. If not it will take a lot longer and many more people will die.
Good luck!
Hugs and respect
Jo