I introduce text-based Zettelkastens as a means of organizing notes, as well as the particular Zettelkasten software I use: Obsidian.
Plain text: https://plaintextproject.online
Markdown: https://www.markdownguide.org
Zettelkastens: https://zettelkasten.de
Obsidian: https://obsidian.md
Alternative software tools (not discussed in the video):
Bear: https://bear.app
Zettlr: https://www.zettlr.com
The Archive: https://zettelkasten.de/the-archive/
Roam Research: https://roamresearch.com
Obsidian's website has lively forums, filled with good discussions about how to use Obsidian (also relevant to alternative applications). https://forum.obsidian.md
Sönke Ahrens has written the go-to book about Zettelkastens, titled "How to Take Smart Notes." If you want to go deep about the philosophy and practical use of this system, check it out. https://www.amazon.com/How-Take-Smart-Notes-Nonfiction-ebook/dp/B06WVYW33Y/
School of Advanced Air & Space Studies: https://www.airuniversity.af.edu/SAASS/
My personal website: https://www.markdjacobsen.com