In exceptionally simple terms, there are three chief strategies used. You need to be able to switch strategies instantly as the action of the match unfolds.
The Blockade
This involves building a 6-deep wall of checkers, or at a minimum as deep as you can manage, to lock in your opponent’s pieces that are on your 1-point. This is considered to be the most suitable course of action at the begining of the game. You can build the wall anywhere inbetween your 11-point and your 2-point and then move it into your home board as the game progresses.
The Blitz
This consists of closing your home board as quick as as you can while keeping your opposer on the bar. i.e., if your competitor tosses an early 2 and shifts one checker from your one-point to your three-point and you then roll a five-five, you will be able to play six/one six/one 8/3 8/3. Your competitor is then in serious dire straits taking into account that they have 2 checkers on the bar and you have closed half your inner board!
The Backgame
This tactic is where you have 2 or higher anchors in your opponent’s home board. (An anchor spot is a position occupied by at least 2 of your checkers.) It must be used when you are decidedly behind as it greatly improves your opportunities. The better places for anchors are towards your competitor’s lower points and also on adjoining points or with one point separating them. Timing is critical for a powerful backgame: after all, there is no point having 2 nice anchors and a complete wall in your own inner board if you are then forced to break up this straight away, while your competitor is getting their pieces home, taking into account that you don’t have any other extra checkers to move! In this situation, it’s better to have pieces on the bar so that you are able to preserve your position up till your competitor gives you an opportunity to hit, so it will be an excellent idea to attempt and get your competitor to get them in this situation!