i still have it but it's pretty useless unfortunately, i know core study doesn't require super in-depth knowledge but it really didn't touch on the info on a good surface-level at all. nothing about sources and the tips they give for sourcework aren't even relevant to the core study paper
if you need it for information, i
made some core study notes over the 2023 hsc year for which i used a lot of resources (including the ken webb one but a bunch of others too that are more in-depth and relevant to the core study topic), with some attached sources and stuff in the notes that you can commonly find in trial papers and exams etc etc. there's also a lot of other good core study notes in the notes & resources section of this forum too
if you're looking purely for sourcework practice
this textbook is so much better in terms of practice questions and sourcework application