About Learnitas

Learnitas is an academy, not a scratchpad: a single person's ongoing effort to build a real, structured curriculum across programming languages, computer science, and a growing set of other subjects — open for anyone to learn from, not just its author.

Created and designed by Gilbert Sambow. © All Rights Reserved. bertlands.me.

Why Learnitas Exists

Most places built to teach something are optimized for getting people to sign up, not for explaining the subject all the way through. A short overview with a diagram counts as real content almost everywhere online, even for topics that take years to actually understand. Learnitas exists because that gap kept showing up, and the fix was never complicated: write the real thing, one note at a time, for as long as it takes, and let anyone read it for free, no sign up wall and nothing to sell.

Every page here, all 627 of them, started the same way: a plain note written alone in a private notebook, long before it was good enough to publish. Most drafts never leave that private stage at all. What's live on this site has already been rewritten and corrected enough times that it felt honest to put a name on it and let a stranger learn from it.

Nothing about reading it needed to be complicated either. No account to create, no paywall halfway through a note, nothing to install. Open a page and it's just there, the same way pulling a real book off a real shelf doesn't ask who you are first.

The notes are wired together on purpose, not left to sit alone. Read about one idea and the ones it actually depends on are a click away instead of buried in some separate course you'd have to buy. That's the real difference between a curriculum and a pile of articles: everything here was written to fit next to everything else, not just to exist on its own.

About Author

My name is Gilbert Sambow. I graduated from Universitas Klabat in Manado, Indonesia, and I'm currently looking for full-time work, open to remote roles, and generally chasing ideas interesting enough to turn into real, working systems and software.

Learnitas exists because of a pattern I kept noticing: most tools being built right now sell an easy life and a shortcut, and that's only gotten louder with AI showing up everywhere. What I wanted to build instead was the opposite, a fundamental knowledge and learning vault, somewhere people can actually read, interact with, and memorize the ideas behind most general topics, including plenty that rarely get talked about at all.

It started as just computer science, since that's where I come from, but it became clear pretty quickly that fundamentals matter the same way in nearly every field, not only the technical ones. My hope is that Learnitas gives people real insight and sharper critical thinking, whether they're reading the theory, working through an application of it, or just following one of the illustrations built to make an idea click. That's also why I've put real effort into interactive learning tools and visualizations here: theory sticks a lot better once you can see it and work through it, not just read about it.

More at bertlands.me, with the social links up in the first section of this page for anyone who wants to reach out directly.

Future Works

Right now the archive holds 50 programming language notes, 371 computer science term notes across the domains listed on the Terms & Knowledge page, and 206 notes across the standalone subjects in the sidebar — artificial intelligence, founders and startups, finance and economics, physics, chemistry, and electrical engineering, with more subjects likely to join them over time. All three numbers grow as new notes get synced in and committed — this page reads them the same way every other page does, live from the content folder at build time, so they're never manually updated by hand.

A few features are planned but not built yet. A quick command menu that opens from anywhere on the site and jumps straight to any note, setting, or tool without digging through several pages first. A more capable study assistant with a choice of teaching styles, the option to run it fully offline with your own local AI instead of the hosted one, and the ability to sketch a quick diagram on request instead of only answering in plain text. A progress map showing how much of each subject has actually been learned, small badges once a whole subject is solidly mastered, and a gentle nudge toward a note worth reading first if the same one keeps getting marked as still confusing. Further out and only if it turns out to genuinely help, a handful of hand-built 3D illustrations for the few topics that are hard to picture any other way. None of it changes what Learnitas already is, still free, still no account required, still one person building it note by note.