Follow a spoken walk-through and put the right letter in the right place. The recording plays at normal speed — what changes between levels is how much the speaker doubles back, and how far the directions sit from the plan in front of you.
You hear: “From the main gate, follow the path north. The potting shed is on your left, just before the pond.”
The plan shows the gate at the bottom, a pond halfway up, and lettered circles either side of the path. Potting shed → the letter on the LEFT of the path, BELOW the pond
Two words did all the work. On your left fixes the side — and note it is your left as you walk north, which on the plan is the west side. Just before the pond fixes how far. Neither word is difficult; the difficulty is holding both while the speaker keeps talking. That is what this drill trains.
Carry into the mock: find the entrance and north before the audio starts, and move your finger as the speaker moves — when they turn round, your left and right turn round too.