thanks for ur excitement!! my notebook IS disorganised, i havent written in it since 2021 bcus i was using various digital means for a while instead, and i even used it as a personal diary/for morning pages at some points (wtf LOL) i basically follow one of the ideas talked about the creators of Every Frame A Painting in their postmortem (https://medium.com/@tonyszhou/postmortem-1b338537fabc) which is to write ideas down and then forget about them. the ones that you remember after or the ones that you still find compelling after forgetting & rediscovering them, are the ones worth keeping. i find visual motifs like doodles or stickers maybe even specific colours help me group ideas together also. and above all i recommend practicing telling your ideas to other people because as you talk/type/answer questions youll naturally start to streamline or identify issues. at least i do. if i go on to create something based on the ideas, like a drawing or short piece of writing or conversation, i find it stays in my mind better. this is why my brain has no room for remembering my phone number, its all huran enki. hope this helps and good luck!