What a helpful podcast all round! Itself a good place for a beginner to start. Kudos to all!
Just an immediate specific reaction:
I have heretofore found Lucretius a slog [and I generally don’t – as a mostly lyric poet – relate well to long didactic (or epic, narrative) poetry]. I’ve pretty much read most of Lucretius now – albeit in a slapdash, patchwork way, and with less memetic absorption than would be desired. But I found Joshua's commentary on the poem encouraging (and he knows far more about poetry per se than I ever hope to).