Question on study material

Fresh L2 here…sorry if this has been asked already but… Just curious for those of you that have been studying…do you ever refer back to your L1 materials? Or is the L1 stuff inclusive of L1 material? Like even if I forgot some basic L1 concept, would I still be able to find it in the L2 books? Just curious if it is safe to get rid of the L1 books…These books are like mini mountains next to my desk. Thanks!

The LII curriculum makes occasional reference to LI topics and reviews a few concepts briefly, but otherwise is focused on introducing new material. I have found it helpful to refer back to my LI books while preparing for LII, particularly when studying topics that aren’t my strengths.