Assistant Engineer · Trainer · ICT Assessor

Hi, I'm S M Raihan

Assistant Engineer (Computer) — NACTAR · Trainer & ICT Assessor (NSDA)

Computer Engineer at the National Academy For Computer Training and Research (NACTAR), under the Technical and Madrasah Education Division, Ministry of Education. Passionate about Data Science, NLP and Image Processing.

Explore Courses About Me

500+

Trainees Registered

20+

Courses Taught

100+

Videos Published

30+

Certificates Earned

Latest Resources

Fresh videos, slides, books and articles.

Latest Videos

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Latest Slides

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Networking

132 downloads

Networking Basics — Slide Deck

Programming

280 downloads

Intro to Python

Linux

220 downloads

Linux Command Cheatsheet

Latest Books

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Networking

Networking Made Simple

184 pages · 4.2 MB

Programming

Python by Example

220 pages · 5.1 MB

Latest Articles

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Career Tips

5 Career Tips for IT Beginners

How to start strong, learn fast and stand out in your first IT job.

Networking

Subnetting Without Tears

A simple way to think about subnets that actually sticks.

Start Learning Today

Pick a topic and dive into the Learn platform.

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🐍

Python

From zero to building real apps. Master syntax, OOP, libraries and projects.

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🌐

Networking

Networks, OSI, IP, routing & switching, DNS, DHCP, security and protocols.

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🤖

Machine Learning

Algorithms, models, neural nets, evaluation, scikit-learn and projects.

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📊

Data Science

Python, cleaning, visualization, statistics and end-to-end projects.

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🔒

Cybersecurity

Fundamentals, network security, ethical hacking, crypto and tools.

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About Raihan

Computer Engineer and Trainer at NACTAR (Ministry of Education) and ICT Assessor under NSDA. B.Sc. in Computer Science & Engineering (2019). I work across programming, web & mobile development, UI/UX, and digital marketing — and research Data Science, NLP and Image Processing.