how to paint a car at home?

you need a compressor 1hp or more a decent auto paint spray gun , a clean garage with flow through large fan, special sandpaper to prepare surface, masking tape /paper to cover non painted areas, primer and special paint from auto paint suppliers and lots of practice to attain proper skills.

Or shop around the local paint shops

Step 1:purchase a paint booth,they start at about $5000

Step 2:purchase air compressor,about $750

Step 3:obtain proper enviromental licensing

Step 4: realize the hassle and take your car to a body shop

go get some brushes and try to use even strokes....and make sure you only use a water base latex paint....

I dont know, you might want to buy a book on that stuff or pay for someone else to do it... a professional.

WITH A ROLLER