To any novice level player who wants to improve their game, I recommend the positions from the book Better Backgammon by Tim Holland. I finished them in a binge one night. Then I reviewed the night after, and then took a week off backgammon. This gave me spaced repetition on the concepts, and the week break allowed me to work on other things at a time that backgammon fever had wrecked my capacity to get things done.
I looked at them a week later, and here I am months later, giving the positions another look. They really helped me to have GNU backgammon criticize my play less, or other words, you know, to play better backgammon.