Nice question, because just staring at charts almost never works for long. One thing that helps a lot is doing what many coaches call drills: short, focused exercises where you repeat the same type of decision over and over until it becomes automatic. For example, you can take one spot (BTN RFI 40bb, or BB vs BTN shove 15bb, etc.), load it in a trainer
App or chart tool, and spend 10–15 minutes a day answering “open/fold/shove/call” as fast as you can, then checking the correct answer.
If you do these drills regularly, you stop trying to memorize every single combo and start recognizing patterns like “all pairs, most suited Broadways, Axs down to A5” for a given position.
Apps like Preflop+, SnapShove or other push/fold trainers are great for this kind of repetition, and you can always add simple flashcards for the trickier spots you keep missing. After a few weeks, you’ll notice that in real time your
hands almost “auto‑select” the action, which frees your brain to think about table dynamics instead of fighting to remember the chart.