In astonishingly general terms, there are three general techniques used. You need to be able to hop between techniques instantly as the course of the game unfolds.
The Blockade
This is composed of assembling a 6-deep wall of pieces, or at least as deep as you can manage, to lock in the competitor’s checkers that are on your 1-point. This is considered to be the most adequate tactic at the start of the game. You can create the wall anywhere between your 11-point and your two-point and then move it into your home board as the game advances.
The Blitz
This is comprised of locking your home board as quickly as as you can while keeping your opponent on the bar. e.g., if your opponent tosses an early 2 and moves one piece from your 1-point to your 3-point and you then roll a five-five, you can play six/one six/one eight/three 8/3. Your opponent is then in serious difficulty since they have 2 checkers on the bar and you have closed half your inner board!
The Backgame
This course of action is where you have two or more anchors in your opponent’s inner board. (An anchor is a position occupied by at least two of your pieces.) It must be played when you are extremely behind as this plan greatly improves your circumstances. The best places for anchor spots are close to your competitor’s lower points and also on adjoining points or with one point separating them. Timing is essential for a competent backgame: after all, there is no point having two nice anchors and a complete wall in your own inner board if you are then required to dismantle this straight away, while your competitor is shifting their pieces home, considering that you don’t have any other spare pieces to move! In this case, it’s more favorable to have checkers on the bar so that you are able to preserve your position up until your opposer provides you a chance to hit, so it may be a good idea to try and get your opponent to get them in this case!