Art is more than anything else about making decisions. It is about living with your choices. Once you make all the little choices then you can roll out and enjoy everything from there. All very meditative. You'll need a gym membership for the days you feel your eyes unable to move from the 8.5" x 11" section in front of your face.
That said, color is of the utmost importance. Color is the emotion in art. Don't get lost in it. I mean, well, get lost in it, but I have a way to bring you back if you have a hard time getting back from all of the amazing combinations and subtleties color offers.
SOLUTION - Decide on a Key!
It might take you years to work up the discipline, lost out there in a set of twelve, heaven forbid twenty-four color pack of pencils or pastels. Well, I'm here to bring you back. You don't need that many colors! All you need is three to six! You'll drive yourself mad with that many options. You can bring out a whole rainbow with just three to six colors.
Do a STUDY. Explore.
DECIDE on a KEY!