I have begun to use cheaper-and-cheaper notebooks. I started with Leuchtturm1917 notebooks, and... they're still great (I still buy on occasion as my "primary notebook").<p>But for cost-efficiency, I have other notebooks. Just composition books and wire-bound college notebooks for $1 or $2 at grocery stores and/or pharmacies. Just whatever cheap 70-page crap is around.<p>------<p>My cheap notebooks get one augmentation to make them comparable to the Leuchtturm1917: an automatic numbering machine (<a href="https://www.hittmarking.com/products/cosco-automatic-numbering-machine-with-six-3-16-inch-wheels" rel="nofollow">https://www.hittmarking.com/products/cosco-automatic-numberi...</a>) to number the pages.<p>Numbered pages are excellent: they allow you to write "Notes continued on page 45". And have page 46, 47, 48 on a different sub-subject as needed. I think of page-numbering as a "FAT32-like filesystem", with a linked-list connecting notes together. (Ex: when I'm done with a notebook, a single thought may go from page 4, 5, 10, 25, 30. I always work from the book beginning to end, but my natural life causes me to revisit ideas at different times, irregularly).<p>---------<p>I suggest buying pre-numbered notebooks (like Leuchtturm1917) to "learn" how to use page numbers as a note system. Later, if you really like the methodology, buy an automatic numbering machine and just make the page numbers yourself.<p>-------<p>I'd say that maybe 50% of what I write, I revisit later. You want to get into a habit of writing everything that's useful (meaning you're writing down + saving many things that are non-useful). Later, you can make pages that summarize earlier thoughts (ex: page 50 may have a summary of pages 10, 15, 20, 21, 22, and 23, and guide you back to earlier notes).<p>But this is only effective if the pages were numbered.<p>When your "cheap notebook" fills up at 70-pages, you can rewrite the important information into the more permanent books, and throw away the cheap notebook. It will be 50% filled with useless crap anyway, so a revision pass is expected and necessary. "Writing to throw away" is a good habit IMO.