Intermediate · Computer Science
Operating Systems
Processes, scheduling, concurrency, deadlock, memory, paging, virtual memory and file systems — exam + interview core
4.9(17 reviews) 4 modules 8 lessons 1 hr 39 min
FreeNewPopular Certificate
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Courses that keep their promises
Work through each lesson in order. Your progress is saved on the server, the time you put in is checked rather than assumed, and the certificate you finish with carries a signature anyone can verify.
30 courses
Courses
Intermediate · Computer Science
C Programming: From First Program to Pointers and Data Structures
A free, deep, hands-on C course — the language underneath almost everything else
15 modules 46 lessons 13 hr
FreePopular Certificate
Beginner · Electronics
Digital Electronics
Number systems, Boolean algebra, K-maps, combinational and sequential circuits — the ECE exam and Viva foundation
4.5(2 reviews) 4 modules 8 lessons 1 hr 22 min
FreeNew Certificate
Intermediate · Computer Science
DBMS
ER models, SQL, normalization, transactions, concurrency control and crash recovery — exam + interview core
3(3 reviews) 4 modules 8 lessons 2 hr
FreeNew Certificate
Intermediate · Computer Science
Computer Networks
OSI to TCP/IP, subnetting, TCP internals, DNS/HTTP/DHCP, TLS security and modern delivery — exam + interview core
5(2 reviews) 4 modules 8 lessons 1 hr 37 min
FreeNew Certificate
Beginner · AI & Data Science
AI Literacy for Everyone
From "what is AI" to a toolkit you actually run — how the models work, how to prompt them, how to verify what comes back, and how to keep your name on work you can defend
10 modules 40 lessons 10 hr 31 min
New Certificate
Beginner · Computer Science
Python Programming: From First Script to Packages, Classes and Testing
A free, deep, hands-on Python course — the language the industry actually runs on
5(2 reviews) 15 modules 46 lessons 13 hr 36 min
Free Certificate
Beginner · Tools
Git & GitHub Mastery
From first commit to confident collaboration — snapshots, branching, PRs, hooks and disaster recovery
4 modules 8 lessons 1 hr 30 min
FreeNew Certificate
Beginner · Web Development
Web Development Bootcamp
HTML, modern CSS, JavaScript, forms, APIs and performance — the frontend stack every product team hires for
4 modules 8 lessons 2 hr 10 min
FreeNew Certificate
Beginner · Computer Science
Coding Foundations: From Zero to Your First Program
A free, end-to-end introduction to how programs actually work
4 modules 10 lessons 9 hr 19 min
Certificate
Beginner · Career
Aptitude & Reasoning Mastery
Clear the OA round - the highest-frequency quant and reasoning topics from TCS, Infosys, Wipro and Capgemini, taught with the shortcuts that save minutes
4 modules 8 lessons 2 hr
FreeNew Certificate
Beginner · Electrical Engineering
Basic Electrical Engineering (BEE)
DC circuits, network theorems, AC fundamentals and machines — the universal first-year subject, exam-ready
5(1 review) 4 modules 8 lessons 1 hr 23 min
FreeNew Certificate
Beginner · Career
Excel for Students
Three hours from pasted data to a defensible tracker — formulas, charts and the clean-up pass that fixes other people's exports
4 modules 8 lessons 2 hr 8 min
FreeNew Certificate
Beginner · Tools
Linux & Shell Basics
Navigate the filesystem, filter text like a pro, manage processes and write your first real bash scripts
4 modules 8 lessons 1 hr 33 min
FreeNew Certificate
Intermediate · Electronics
Signals & Systems
Convolution, Fourier series & transform, sampling theorem, Laplace & Z-transforms, Bode plots and modulation — ECE exam + interview core
4 modules 8 lessons 2 hr
FreeNew Certificate
Beginner · Mathematics
Engineering Mathematics I
The Year-1 maths every branch shares — limits and series, optimisation, integration, matrices and eigenvalues, taught with the exam shortcuts that save minutes
5(1 review) 4 modules 8 lessons 2 hr 5 min
FreeNew Certificate
Beginner · Databases
SQL & Databases Mastery
Query, join, aggregate, design and tune the database every placement test and production service depends on
5(1 review) 4 modules 8 lessons 2 hr 10 min
FreeNew Certificate
Beginner · AI & Data Science
Python for AI
Forty lessons from your first print() to a shipped end-to-end notebook — Python, NumPy, pandas, honest charts, core statistics and your first scikit-learn models
10 modules 40 lessons 12 hr
New Certificate
Intermediate · AI & Data Science
Building Apps with LLMs
Architecture, API engineering, UX, context, tools, extraction, evaluation, safety and cost — forty lessons to shipping an LLM feature that survives production
10 modules 40 lessons 11 hr
FreeNew Certificate
Intermediate · Mechanical
Fluid Mechanics
Fluid statics, Bernoulli, flow measurement, momentum forces, pipe losses, dimensional analysis and open-channel flow — ME exam + interview core
4 modules 8 lessons 2 hr
FreeNew Certificate
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How TieEdu courses work
Every TieEdu course is a fixed sequence of modules and lessons. Nothing is unlocked out of order, so a lesson you have reached is a lesson whose prerequisites you have already met. Progress is recorded on the server as you read or watch, which is why it survives a cleared browser and a new phone.
Ratings on this page come from learners who finished the course and submitted feedback — an unrated course shows no rating at all rather than a made-up one. Learner counts are enrolment records, not impressions. The same rule governs completion and XP: the server credits time at real-time speed and caps how fast a lesson can be marked done.
22 of these courses are free to start. Finishing any of them issues a certificate signed by TieEdu, and its serial can be checked by anyone at tieedu.in/verify without an account.
Use the filters to narrow the list by beginner, intermediate, advanced level and by topic — currently free, placement, interview, beginner, career, ai, cse, data-structures, among others.