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A learning system for the ever-curious software engineer.

Build better engineering judgment.
One idea at a time.

Learn from carefully chosen engineering books through clear explanations, practical checks and spaced review. See your progress as you build understanding and a habit of coming back.

Join the beta listTry a short lesson

Private beta. Starting with one reviewed book course.

Try the learning loop1 of 3
  1. Understand
  2. Recall
  3. Return

A cache is
a useful copy.

A cache keeps a copy of information close at hand so you can read it quickly. The trade-off: when the original changes, the copy can be out of date.

Think of a café's printed menu. It makes prices easy to look up, but a price change at the till won't update the paper.

An original sample: understand, recall, then review. This demo does not save progress.

Ideas worth learning.
A system for making them stick.

Good engineering books bring the depth. Restudium turns that material into a reviewed learning path, with a clear next step and a way back to earlier ideas.

  1. Understand the idea.

    Start with a clear explanation and a worked example. Explore the original source whenever you want more context.

  2. Try it for yourself.

    Answer a check before revealing the explanation. Compare your reasoning, assess your understanding and build toward the next chapter.

  3. Return and build on it.

    Spaced review brings earlier ideas back. A sitting includes up to three due reviews, keeping the next step manageable.

Earn points for successful checks, chapter passes and later recall milestones. See what you've completed and what you've revisited over time. Each sitting adds to progress you can come back to.

One chapter builds on the next
01Understand the foundationsIdeas, then a chapter test
02Build on what you knowYour next chapter
03Connect the ideasUnlocks after chapter 2

Illustrative path. Passing a chapter unlocks the next. A later missed review keeps your chapter pass.

Understanding takes practice.
Remembering takes returning.

Explaining an idea, trying to recall it and returning to it over time are different parts of learning. Restudium brings them into a repeatable routine.

Research supports retrieval practice and distributed practice as useful learning techniques. That informs how we're building Restudium; we're still learning how well this particular experience helps engineers retain and apply what they study.

The aim is understanding you can use: explaining a mechanism, recognizing when it applies and reasoning about its tradeoffs.

Build a reading and recall system

Why I built this.

By Titus, creator of Restudium

I kept buying technical books — DDIA, SICP, the classics — reading them cover to cover, and retaining almost nothing six months later. I'd look at my bookshelf and feel like a fraud. All those ideas, just gone.

I've spent more than a decade building that library, finding books worth the time and always looking for the next one. They contain years of experience and careful reasoning. I want to understand those ideas well enough to recognize them at work, explain them clearly and build on them months later.

I tried Anki. Making cards by hand for a 500-page book is a second job. I wanted to spend that effort learning. That's where Restudium began.

There are two parts to what I'm building. One is the curriculum: choosing good sources and turning them into clear, coherent teaching. The other is the system: practice, spaced review, visible progress and small rewards that make it easier to keep coming back. Both deserve care.

The private beta starts with one reviewed book course. Over time, I want to build paths through engineering concepts, bringing together useful explanations from different books and other writing. The authors stay credited, and the teaching needs review. AI helps with preparation; deciding what is worth learning and whether a lesson works is still part of the job.

I'm building this for myself first. I want something that feels good to use, helps me make steady progress and gives the ideas a chance to stay with me. That's what Restudium means to me — study, again.

The thinking behind the practice.

Explore how recall, spaced practice and thoughtful teaching can help you build understanding that lasts.

Explore all articles

Help shape a better way
to learn engineering.

Restudium is in private beta. We're refining the teaching and the daily study experience with one reviewed book course. Join the list and we'll email when an invitation is available.

A few things to know.

Can I start learning today?

Access is by invitation. Joining the beta list registers your interest; it does not create an account or unlock the app. There is no announced date for open access.

What can I study?

The private beta starts with one reviewed software engineering book course. Over time, we want to teach connected concepts using carefully selected books and other writing. Those broader paths are still ahead.

How are the courses made?

We select the source material, use AI to help prepare explanations and checks, and review the teaching against its sources before publication. The original authors remain credited. Courses are prepared in advance.

Can I upload my own books?

There is no upload feature. Restudium starts with a carefully selected library and courses reviewed before learners use them.

Do I need to read the book first?

No. Each new idea begins with teaching before its check. The source is available when you want to inspect it or read more deeply.

How long is a sitting?

A sitting covers one new idea or a chapter test, plus up to three due reviews. The time depends on the material and how you work through it. Your progress is saved so you can return later.

What do points tell me?

Points recognize successful checks, chapter passes and spaced recall milestones. They show earned progress. Applying an idea in real engineering work takes further practice and judgment.