Hi, hope these little tips from a noob like me can help you

1. Lazy people don't remove sprues, but I insist to remove because after painting and you remove them from the runner, you will see unpainted part on sprues, what lazy people do is hand paint it afterward which make the result not good because of uneven colour texture. What you need to do is cut the part from runner and clean the sprues by sanding with fine grit sandpaper, then wash the part and let it dry before paint.

2. Primer use adhesive and also cover the original colour so you can get even colour texture over the model. Parts that too small you may skip if you do hand painting.

3. Buy a paint tray and pour your paint and mix with enamel hobby thinner, just do like what you learnt from drawing class.

4. Depends you want handbrush or airbrush, hand brush use enamel is the best, acrylic and lacquer are more suitable for airbrush. Lacquer is the strongest paint, strongest smell and also most harmful so usually people use acrylic paint for airbrush.

Cheers

^ added abit on that

1. It ok to paint small part that still on sprues since it was easier to handle.

4. For handbrushing better use Enamel or Acrylic. Lacquer in my experience is only good for Airbrush since it dry fast than the other two.

For more you can refer to this video playlist for tips:
https://www.youtube.com/watch?v=QTjm6L8P9uc...0C23B14D4BD500A