If you really think that you want to paint a car and then get ready for a full-time job in front of you. This does not mean that you can not or should not do, it just means make sure you are ready to see the work being done from beginning to end.
If you do not finish the job completely or correctly then you will be driving something that might be a little embarrassing for the eyes at least. If you want to get paint supplies, then you may consider Evercoat products.
To paint the car requires careful planning and ensure that you have all the equipment you need and the time to go through at least some of the stages.
There are things that you will need by way of supply. You will need masking tape, goggles, dust masks, sandpaper, primer paint, wax / grease remover, paper for the cover, car wash and detergent, paint sprayer, putty knife.
When you buy make sure you buy your sandpaper grit is good and thick, as you may need both texture. Total primary and urethane-based paint you need will depend on the size of your vehicle.
Do you want to use a paint sprayer is up to you, if you choose not the ordinary spray paint cans will do well. Make sure you wear the right clothes when you go to paint the car so that your skin is not exposed.
Finally, make sure you have the proper space to work in. You should be able to work around your car. You definitely need good ventilation, and you'll need to be able to protect it from the elements.