Flat or Dead-Flat Oil - Provides a completely flat, oil-based finish. Generally used on walls but not suitable for areas of high wear.
The paints may be applied by brush or spray; the small spray attachment for vacuum cleaners is very convenient, especially for painting radiators.
Basically what you're looking for is a good, solid foundation of existing paint that is stable and still strongly bonded to the car. Many times an original factory paint job, even after decades will meet these criteria.
Matt - Describes paints that give a flat, non-reflective finish. It is ideal for walls and ceilings that are not perfectly smooth.
Store your leftover paint in plastic Rubbermaid beverage jugs or other plastic seal-able containers. Paint left in the can always gets funny after time. Either the can isn't properly sealed of it gets exposed to extreme heat or cold. I like to store my paint inside where the temperature is controlled.
Water-thinned rubber-latex paint is already an old reliable, though it is only about 10 years old. It accounts for a big percentage of all paint sold and is still the most widely available of the easy-to-use finishes. One new type is a combination vinyl-rubber paint that is said to do a better job on interiors than either vinyl or rubber alone because it dries faster, lasts longer and has less sheen.
Now, decide WHAT you want to paint. Very important...you do NOT need to know how to draw. That's the great thing about painting, you can create even if you've never had a lesson. Don't get me wrong, art school is great. But don't let the lack thereof deter you from creating. You do not have to have a teacher to tell you how to create. You do need to know a few basic techniques, but from there let your imagination fly! When deciding what to paint, go to some websites about artists or Google famous artists to get inspired. Again, do not let a lack of training deter you from painting! Many of the great artists of the past had no training either. Many can't draw stick figures, but they can paint because the colors give you amazing options of expression! You may also go to my websites mentioned below or Google me to see all the crazy work I've created. My personal preference has been to create a large variety of work to keep it interesting and versatile. I did not want to be that artist who only painted one thing over and over. To me that's boring, and it should be boring to you too. Any known artist of the past has a vast variety of work. You'll also find that it makes it more interesting to you while you're doing it, because you won't ever get bored, you'll always be wondering how it'll turn out.