You can see the process on videos from zettelkasten.de guy: entire playlist https://www.youtube.com/playlist?list=PLHwtkAtdkx1IZoI7FZf1X... and something new that I didn't watch yet, but it looks like it's also walkthrough, from the other guy from zk.de: https://www.youtube.com/watch?v=2_MJYtWr1vE