You can use any type of acrylic paint you feel comfortable with. Try to begin with a rainbow of colors with Black, Brown and White as well. You can blend colors together, or use whatever you want. Craft paint is perfectly acceptable
You can use a paint pallet if you have one, but I often just use a paper plate, a sheet of wax paper or tinfoil to put my paints out on
q-tips will be a great tool to use for painting abstractly
I order cheap triangular makeup sponges on Amazon