You don’t connect notes as the pinnacle achievement in dealing with knowledge (or at least should not, because it is an insult to your potential). You should go way deeper. To make sure that you go as deep as you can, you should try to actually create something. Create (knowledge) tools you want to use. If you process a book, an article or whatever, ask yourself what tools you (or perhaps your clients) need. Then you marry the two concepts, Depth of Processing and Value Creation, properly. The depth is the necessary condition to create something valuable. You notice if you hit the threshold of proper depth of processing when you have created something of value.