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Complete guide · Updated for 2026
SENA — the Servicio Nacional de Aprendizaje — is the reference point for free, certified online training in Colombia. Because it is publicly funded, learners pay nothing to enrol, study, or certify. This guide pulls together everything in one place: what the catalogue looks like, how the three platforms fit together, who can apply, how the certificate works, and the practical questions people ask before they commit. It is written to be genuinely useful, and it is independent — see the note at the end.
Free training that is built to be taken seriously
SENA has trained Colombians for decades, and its move online has made that training reachable from anywhere in the country with a connection. In a typical year the institution publishes hundreds of virtual courses — well over 400 — alongside longer technical and technologist programmes. Short “complementary” courses run from roughly 40 to 380 hours and are ideal if you want a focused skill quickly; the longer tracks are closer to a full qualification and can run for many months.
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The reason it stays free is straightforward: the Colombian State funds it. There is no tuition, no charge for materials, and no fee to download your certificate. That single fact is also your best fraud filter — any page that asks for a payment or card number to “hold your spot” is not part of the official process.
How the three platforms work together
Newcomers often get stuck because SENA uses more than one system. In practice each has one job. Betowa is the shop window and the checkout: you browse the educational offer and complete enrolment there. Zajuna is the classroom: once accepted, you log in to study, download materials, complete activities, and reach your instructor. Sofía Plus is the records office: it holds your academic history and is where your digital certificate is issued and downloaded when you finish. Keep those three names straight and the whole experience becomes far less intimidating.
What you walk away with
The end result is a digitally signed certificate with a QR authenticity code, holding the same legal validity as in-person training and verifiable online. That verifiability is the whole point: employers can confirm it in seconds, which is what makes the time you invest actually pay off on a résumé.
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Where to start
Digital and technology skills
From office tools and spreadsheets to data, programming, and digital marketing — among the most searched-for and most transferable tracks in the catalogue.
Administration and services
Accounting basics, logistics, customer service, sales, and human-resources fundamentals that map directly onto roles employers are hiring for.
Occupational health & safety
Workplace safety (SST) and related courses that many Colombian employers actively value and sometimes require of new hires.
Agriculture, tourism and trades
Sector-specific training — agribusiness, hospitality, tourism, and technical trades — reflecting the real shape of the Colombian economy.
Guides that speed up your decision
Is it really free, with no hidden cost?
Do I need a diploma to sign up?
When can I enrol?
How long until I get my certificate?
Is the certificate accepted by employers?
Is this the official SENA website?
Pick your starting point
Read the guide that matches where you are — the catalogue overview, the enrolment walkthrough, the requirements and certificate, or the mobile and FAQ guide — and take the first step toward a free, certified course.