Have you ever felt like your notes are just a chaotic collection of thoughts, scattered across notebooks, apps, or sticky notes, never quite coming together into something useful, like a second brain?

Note-taking can help in class or a meeting—and if you do them right, they'll help you afterward as well. Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity ...

Have you ever had a brilliant idea pop into your head, only to forget it moments later because life got in the way? It’s frustrating, isn’t it? We’ve all been there—scrambling to recall that fleeting ...