... I'm thinking of working through Judit Polgar's "Teaches Chess 1" ("How I beat Fischer's record"). Is that a good idea? ...
I suggest taking a careful look at pages 11 and 12 as reproduced here:
https://www.qualitychess.co.uk/ebooks/HowIBeatFischersRecordExcerpt.pdf
How should a weak/novice player improve his game? I'm thinking of working through Judit Polgar's "Teaches Chess 1" ("How I beat Fischer's record"). Is that a good idea? I've got a few other books too, but this one looks promising.