From the beginning of part 2, chapter 2:
Winston picked his way up the lane through dappled light and shade, stepping out into pools of gold wherever the boughs parted. Under the trees to the left of him the ground was misty with bluebells. The air seemed to kiss one’s skin. It was the second of May. From somewhere deeper in the heart of the wood came the droning of ring-doves.
What is the meaning of "pools of good"?
In terms of explicit imagery, Orwell is referring to the yellow sunlight passing between the trees and making bright patterns on the ground, thusly.
These similes and metaphors reflect a fairly simple 'pathetic fallacy', where Winston's mental state change and improvement (in terms of his journey from the grim city into the beautiful countryside where he will be meeting his lover) are demonstrated to the reader by showing them some idyllic pastoral scenes.
