Download BGBlitz Then even if you do not buy it, you can use it to show some very good tests you can download on the same page and use it with BGBlitz. They contain analysis and often annotations for each move and why it's bad/good to play etc....
Note that BGBlitz 1.9.5 is a top program at the level of GNUBG 0.14 but i think GNUBG is a little better....
What is the best way to become better at Backgammon?
4th) Stop fearing to leave a checker alone! :-)
3d) Learn the opening rolls and their main replies....
2nd) Study games and positions like the above i gave....Not too hard, not too lazy. Don't try in any case to memorize the position so you would have something to compare! Never! Just try to understand the reasons why each move is better or not....
1st) Play hundrends of games against Jellyfish 3.5, or Snowie 4.0 or later, or GNUBG 0.14, or BGBlitz 1.9 or later. But while playing these games you should open your brain and accept the knowledge you gain and learn from the games.