Here you can find a tutorial from Clive 5 Art with 5 tips you should always do when using acrylic painting
1. Apply Gesso even on pre-paint canvases
2. Get rid of the white - put a layer of ground paint, while the gesso is still wet
3. Wet the rear of the canvas, to keep the canvas stay wet
4. Use 2 water containers, one to clean your brush, and one to wet your brush
5. Use a wet palette. You can make one into a box, where you place a paper towel, wet the towel very good, then place on top of it a baking paper. Place your paintings on that baking paper.
You can find also a lot of tips and tricks tutorials from Clive 5 Art on YouTube. They are very interesting and useful !