Personal Knowledge Management System (PKMS)
file organization systems
PARA
by Thiago forte, who wrote building a 2nd brain, very popular.
P projects
A areas
R resources
A archives

ACCESS:
part of LYT kit; linking your thinking by Nick Mylo. Free
heavy use of MOC
A atlas
C calendar
C cards
E extras
S sources
S spaces
later evolved to:
A atlas
C cards
E Efforts
Johnny Decimals
https://www.youtube.com/watch?v=DtwM8W8Z1ZA&list=WL&index=28
For organizing file systems, not necessarily only for knowledge management. Se puede usar para documentos, emails, etc...
Lo que mas me llama la atencion de Johnny decimals es el template para proyectos/compaƱĆas.
my personal solution
https://www.youtube.com/watch?v=7iq6H1Tmu1I
- keep the root folder small
this guy mixes PARA folder structure with Johnny Decimals numbering.
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Johnny Decimals
- Sorts by name, importance
- use the same numbers across apps and systems.
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PARA
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Projects
- Current things
- need to access notes frequently
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Areas:
- notes that are accessed more infrequently
- aspects of your life, like plans and frameworks.
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Resources:
- zettlekasten notes
- old meeting notes, example: "30.6 - Features"
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Archives:
- finished projects (implemented feature or fixed bug)
- old changelogs
- old roadmaps
Zettlekasten
Is a flat folder structure.
is a good way to avoid orphan notes, bc each note must be places somewhere in an existing chain. A lot of personal systems I've seen online use daily notes with Zettlekasten.
I think this approach is particularly useful for research and studying.
Zettlekasten can be combined with daily notes first approach of content based approach. and works as like a separate view of the same notes.

Sources
Best videos I have found on the subject
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The Ultimate Guide to File Organization: 5 System You Must To Know
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inbox folder in access and inbox in GTD.
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doesn't like PARA bc doesn't like moving files around.
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uses zettlekasten
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likes folder structures.
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likes decimal numbering of JD
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uses daily notes as well
looks like he mixes and matches the best of every system -
Rethinking my PKM part 5: How do you organize your notes?
random mess: what we want to avoid.
daily notes first approach: nope
very useful for meetings tho...
content first approach (atomic):
topic first approach: seems like a logical evolution of the content based approach.
action first approach / context first: everything gets organized based in the context you will most likely use it next.
strong advocate for this is the PARA and ACCESS method, which is what I have on my vault.
This guy's channel is a gold mine for PKMS. Very visual, breaks down concepts very well, easy to understand.
also goes through books: