Paint in order or ease of use (best) and cost (least)
Acrylic Lacquer. Lacquer-based auto paint was popular between the mid 1920s and 1960s, and is still available today. Lacquer paint is cheap and goes on easy for the inexperienced painter, plus it provides a nice high gloss. However, it also chips easily being a relatively “soft” paint, and it doesn't stand up well to UV and chemicals, making it a short-lived paint job. Today lacquer is most often used as a primer-surfacer.
Alkyd Enamel aka Rust Oleum, Van Sickle, XO Rust, Val Spar 10.00/qt Low cost, easiest to find and use, can add hardener for increased chemical resistance, increased gloss, and quicker cure time. Usually reduced with Naphtha or Mineral spirits.
Modified Alkyd Enamel aka Paint sold by N Complete and some tractor manufacturers. This product usually comes with an MSDS sheet reporting it to be Alkyd modified. I tried some paint from N Complete and found that it dried much faster than standard Alkyd and generally refused to mix with products typically used with Alkyd paints. The paint worked well with Omni Acrylic enamel reducers and hardener. Val Spar Restoration Series paint may be a modified Alkyd.
Acrylic Enamel aka PPG Omni AE, PPG Del Star, DuPont Centari 22.00-45.00/qt. Next step up, still easy to use, hardener usually required. Has increased chemical resistance, increased gloss, and quicker cure time. Cured paint is harder than Alkyd, more resistant to oils and fading than Alkyd. Reduce with Acrylic Reducers 24.00 gallon hardener is 24.00 pint and 2 needed per gallon.
Acrylic Urethane aka PPG Omni AU.The next step up. Urethane paints are newer than enamels, are more expensive and more trouble, but they lay down easily like lacquer while having the toughness of enamels.
Epoxies, 2 part product. Impervious to just about anything known to man, used to paint aircraft and Diesel locomotives, $200-400 gallon, need Epoxy reducers and catalyst.
The best advice is I can offer if you are new to painting is to use 1 product line and all products from it like the primer, color and clear if so inclined. I've settled with epoxy primer and Acrylic enamel top coats, everyone has their favorite. I liked the Val Spar Restoration series primer, perhaps the Resto series paint is nice too. In the Alkyd family I prefer Van Sickle which is also the Tisco product.
Isocyanates
If you are going to use hardeners (isocyanates), do not attempt without a respirator system designed to protect you from your product. Some people are very sensitive to the iso in hardeners and have severe reactions even resulting in death.