1. the choice is yours, I use acrylic because of the ease in clean up, but a lot of people swear by thier enamels. Here are dome good and bad points for each..
ACRYL
GOOD: Ease in clean up, dries fast, easily thinned, safer in confined spaces (still use a respirator though) more flexible.
BAD: Can dry super fast, even at times, on the tip of your a/b, less durable
ENAMEL
GOOD: good coverage, more readliy availble in Asian countires, stands up to weathering better
BAD: Stinks, like smells, clean up can get hairy, more solvents and chemicals used, using a respirator is a must!
2. Again that is up to you, 10 people will tell you use dark, black color as an undercoat, and 10 people will tell you use a ight base coat. Try both decide what you like
3. Can but I would chose one medium and stick to it.
4. Nope vice versa, it's either to thick or your applying to much! Shake your paint for at least 2 mins. before use. Also a good brush is a must, don't skimp on your brushes!
5. No sure if there is a guide how to choose, but why not learn for yourself.