Can anyone point me to a resource that discusses break shots in straight pool? It is the biggest weakness in my game. I don’t fully understand which ball to go in to and how to address the cue ball based on where the break ball is. Thanks in advance.
There are general guidelines, like follow on a thin shot (standard side of the rack break) and draw on a fuller shot (where follow will take you to the same pocket as the break ball).
I think the best way to learn is to practice specific ball positions. Place donuts in the break ball and cue ball positions, and find out what works for that position. Mostly you will vary speed and draw/follow. Use side spin to affect the cue ball when it hits the cushion. (Some use outside to avoid skids.) See if you can find several good ways to hit the break for that position.
Now, move the break ball half an inch up or down the table. Work with that position.
I found one position where the shot changed completely depending on which part of the pocket the object ball went into, and that was a table with 4 1/2-inch pockets. That small change in cut angle changed which ball I hit first in the rack, and so completely changed the best spin/speed to use on the cue ball. Since one side would make the cue ball freeze if I used follow, draw was best.
And try a wide variety of shots on each position. A shot that used to be absolutely standard at 14.1 in the 1970s and I never see today, is a tough-to-reach and slightly off-angle break that hits low on the rack. The standard shot then was to roll the shot in with the cue ball not quite reaching the cushion by the pocket where the break ball was pocketed. Nearly always, it seemed, a ball would come out of the back of the rack and be perfect for a second break. You don't have to smash them like Hohmann, especially if you often miss those power breaks when they are a little awkward. With the soft roller, you take a chance that only a safety will be left, but you are much less likely to lose control of the table.
You do have to find a way to get the cue ball away from the rack. If the cue ball sticks, you are likely to have neither a shot nor a safety. In your practice, learn when you need to do to get loose.
Finally, gaps in the rack can have a huge effect on the result of the break. I remember how easy it was to break just after the tables at the rec center got reclothed. It was due to tight racks, which were generally impossible after a month.