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Ask HN: What is your system for learning new things?

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61–70 of 72 posts

Re: Ask HN: What is your system for learning new things?

#61

I read, I play, and then I write an interactive page about the thing. E. g. https://wordsandbuttons.online/complex_numbers_and_conformal...

A small correction : irrational should be replaced by imaginary. An irrational number is a number that cannot be represented as a ration of two numbers, like sqrt(2)

Re: Ask HN: What is your system for learning new things?

#62

A shortcut that I use for learning new technologies is to learn their pitfalls and tips. For example: I want to learn the PostGIS PostgreSQL extension. I install the extension and make a sample database with PostGIS datatypes. Then I will make a bunch of the following searches: "postgis gotchas", "postgis tips and tricks", "postgis common mistakes", etc. Open everything you find in a new tab. Then I will edit the sam…

This is what I really liked about Paul Hegarty’s iOS dev course. His projects sort of deliberately walk students into the common pitfalls so that you can try to figure out a fix on your own and then he explains what/why/how Swift behaves that way.

He doesn’t deliberately teach you incorrectly but he’ll set up the project in such a way that when he asks you to add X he expects the vast majority will think “oh I just do this” which doesn’t work because the real answer is a bit more involved. Bonus: when you start spotting the pitfalls ahead of time it’s super motivating!

Re: Ask HN: What is your system for learning new things?

#63
post #40
post #33

1. Find a new note-taking app 2. Spend a couple hours configuring it 3. Install a bunch of extensions 4. Run into some obscure bug, spend a couple hours debugging it 5. Report the issue 6. Go to bed, satisfied with how productive I've been

People who use second-brain knowledge systems spend more time writing about, than actually using them — so 7) would be blogging about it.

Killer apps are hard to find. I recently thought to myself “I have notes scattered across five different services, I should consolidate them” - so I dove into Obsidian, got it all set up to cloud sync, transcribed some of my existing notes, categorized them, aaaaaaand… a year later, I now have notes scattered across six different services.

Re: Ask HN: What is your system for learning new things?

#64

The most important thing for me to really cement something is producing (vs consuming). Reading docs, watching videos... those are consuming. Of course you do have to do these things to get started. When most hackers thing of producing they probably think of building something - meaning coding a small project - but for me, to really really learn something, absolutely nothing comes close to teaching it to someone else…

That is a really good way to learn something, better than my version which is to implement something using it.

I may steal this method.

Re: Ask HN: What is your system for learning new things?

#66
post #40

Earlier quoted context omitted.

People who use second-brain knowledge systems spend more time writing about, than actually using them — so 7) would be blogging about it.

Killer apps are hard to find. I recently thought to myself “I have notes scattered across five different services, I should consolidate them” - so I dove into Obsidian, got it all set up to cloud sync, transcribed some of my existing notes, categorized them, aaaaaaand… a year later, I now have notes scattered across six different services.

> killer apps are hard to find

This is why I learned to just accept imperfect systems.

Perfect systems just don’t exist.

For the time being I’ve settled on mediawiki per notes and digital garden.

Ymmv.

Re: Ask HN: What is your system for learning new things?

#67

A shortcut that I use for learning new technologies is to learn their pitfalls and tips. For example: I want to learn the PostGIS PostgreSQL extension. I install the extension and make a sample database with PostGIS datatypes. Then I will make a bunch of the following searches: "postgis gotchas", "postgis tips and tricks", "postgis common mistakes", etc. Open everything you find in a new tab. Then I will edit the sam…

"Postgres interview questions"

Re: Ask HN: What is your system for learning new things?

#68
post #33

1. Find a new note-taking app 2. Spend a couple hours configuring it 3. Install a bunch of extensions 4. Run into some obscure bug, spend a couple hours debugging it 5. Report the issue 6. Go to bed, satisfied with how productive I've been

are you me?

My notion configuration is so complex now, api posts, conditional formatting and quirky ui features...but I'm still a human blob.

Re: Ask HN: What is your system for learning new things?

#69
One recent thing I was playing with I fed ChatGPT the docs. The summaries that it spat back out were much better than the docs at explaining what was going on as the missing context was in the corpus. It's an interesting approach and likely one I'd repeat for other tasks in the future.
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