First thing to do once the damage has been done is to get rid of any water left inside. You may need a pump or a number of friends with buckets and mops. The sooner you get the water out the less serious damage you will have.If there is furniture in the room still and the weather has cleared. Watch video link in below
Video link: http://wp.me/p7PtNj-za
Now you need to thoroughly dry out the area. Try and get fans and dehumidifiers working in the area. Open windows and doors to create cross-drafts. This is the most important step – if the structure of the building is still damp there is no point in moving onto the next step.