Free 20 min. trial Free
Pack of 10 or 20 classes$ 19/lesson $ 19
Pack 5 lessons$ 19/lesson $ 19
1 class (60 min.)$ 19/lesson

See availability and book

Usually responds within 12 hours

Rubén

10 10 3

5,0 (3)

0 lessons

Computer Science, Computer Programming

+ 1 year of exp. teaching online classes

About me

COMPUTER SCIENCE LESSONS – AVANZA DE VERDAD – SMR/ASIR – Networks, Systems, Projects

Stuck with SMR, ASIR, networks, systems, or cybersecurity? You don't need a miracle: you need it explained well. I'm Rubén Martos. In 2025, I realized something important: students weren't failing because they lacked ability, but because no one was explaining computer science to them clearly, practically, and directly, and they were becoming demotivated. And I thought: "If I could understand it, I can teach it. And I can do it better." Today, I'm an SMR Technician with a distinction for Best Academic Record, Erasmus+ experience, and I'm currently in my final year of ASIR. I've worked in support, systems, and cybersecurity for companies in Spain and Portugal, and I manage an ethical hacking blog. Since then, at Avanza de Verdad (True Advancement), the goal is simple: Don't memorize: understand. Don't pass: excel. 📌 Classes We Offer • Networking, Subnetting, Cisco Packet Tracer • Linux, Windows Server, Active Directory, Scripting, Virtualization • Cybersecurity, Privacy, Ethical Hacking • Databases, SQL • Mentoring for SMR and ASIR Projects • Digital Training for Adults 🧠 The Real Advancement Method • Understanding is Power: You don't come here to pass; you come to understand. Because when you understand, you stop depending on luck, the teacher, and the exam. Understanding gives you power, and power changes your life. • Practice Makes Perfect: The key to learning is practice. We work with real exercises, problems, and exams—the kind of thing that puts you in the top 1%. • Empowering Support: We help you inside and outside the classroom and adapt each session to your needs through dynamic and motivating classes, where asking questions and making mistakes is the right path. Free initial call. Let's make real progress, not just pass 🚀

Availability

Choose a date and time to start booking your class.
Times are displayed in your local time zone.

Can't find the availability that suits your needs?

Contact teacher

Feedback from my students

Todo genial, explica muy bien

Sin su ayuda mi hijo no habría aprobado la asignatura, y al final lo ha conseguido!. Rubén es un profesor que no solo enseña, sino que motiva. Sigue así, porque ayudas a muchos chicos a creer en sí mismos y les das ilusión y esperanza para seguir estudiando. Gracias de corazón

Me he visto estancada con mi proyecto de ASIR y sin duda alguna, las clases de RUBEN han sido luz en el camino. La metodología y la paciencia son clave en la enseñanza y Rubén ha superado con creces mis expectativas.

I teach

Computer Science
- IP networks
- Windows
- Linux
- Server
Computer Programming
- SQL
- PHP
- CSS
- HTML
- Web Development

Languages I speak

SpanishNative

EnglishWorking proficiency

Education

Técnico En Sistemas Microinformáticos Y Redes

Degree - B.A.

Técnico Superior En Administración De Sistemas Informáticos En Red

Degree - B.A.

Ise Ii (B2) – Trinity College London

Certification

Ise Ii (B1) – Trinity College London

Certification

Certified Red Team Analyst (Crta) – Cyberwarfare Labs

Certification

Web Red Team Analyst (Web-Rta) – Cyberwarfare Labs

Certification

Mejor Expediente Académico En Sistemas Microinformáticos Y Redes

Certification

Other things I like

Frequently Asked Questions

Can I cancel a booking?

Can I modify a booking?

Where are the lessons held?

How do I pay for the lesson?

Other recommended online Computer Science teachers:

5,0

(5)

$20 /lesson

Free trial available

https://dbwf8q1mv0cee.cloudfront.net/chi/api/user/dtp/_uji7xal3egpoojfu2s0tipfl3f9mher0.jpg/124x124cut/?v=4

Guglielmo
Verified teacher, moderated by the Classgap team

433 lessons

Computer Programming, Computer Science

Intelligence Systems IP networks Cloud Computing Windows Linux Server

Computer teacher working in the field since 2010. ⏤ Hello everyone! My name is Guglielmo, and I'm thrilled to have the opportunity to be your computer science teacher. I graduated in 2014 with a Bachelo...

Online Computer Science tutors

Online Computer Programming tutors

Online IP networks tutors

Online Windows tutors

Online Linux tutors

Online Server tutors