Structured chapters, one question a day, and a certificate carrying an ID that anyone can check for themselves — an employer, an admissions office, a stranger with the link.
Holding a certificate already? Verify it here — no account needed.
Mastery isn't an overnight event. It's the residue of consistent effort — which is why each day brings a single new question per subject, rather than a queue of tutorials to grind through.
Answer it, see where you stand, come back tomorrow. Small enough to fit a busy day; regular enough to add up.
See today's question
Complete every chapter of a course and edusolum issues a certificate carrying a unique ID.
Anyone you hand it to can enter that ID on our public verification page — no account, no email, nothing to ask us for — and see the recipient, the course, and the date it was completed. That's the difference between saying you learned something and showing it.
Create an account, open a course, and find out whether the work suits you before you decide anything else.
Create your accountEmail and a password, then a six-digit code to confirm the address. No card, about a minute.
