One goal.
Different ways
to learn.
Your TRB preparation is more than a single study format. Read, listen, watch, practise and experiment across our learning family. Build a route that works for your next step.
The learning vision of KalviYogi Nagarajan. Thoughtfully built around students.
Discover the work behind every platform, and the part each one plays in a student’s learning.
Find your way in. Build your understanding.
KalviYogi Nagarajan’s work brings different study needs into one learning family. Build a foundation in the notes, find clarity in an explanation and check your understanding through practice.
8 learning platforms
KalviYogi Shorts
A small lesson. An idea that stays.
Revisit one idea at a time with short Tamil and English learning videos. Make a little space for revision between longer study sessions.
- One idea
- A short lesson
- Revisit
Public previews; watching and Premium access vary by lesson.
Explore short lessons — opens in a new tabshorts.kalviyogi.comKalviYogi Audio
Give understanding a voice.
Listen to Tamil and English audio lessons organised by exam, subject and chapter. Bring a useful explanation into your everyday study routine.
- Choose a topic
- Listen
- Reflect
Free exploration; some tools and lessons depend on account or plan access.
Find an audio lesson — opens in a new tabkalviyogi.comKalviYogi TRB
Find out what you understand.
Work through questions and timed tests. Use available explanations and your attempt history to decide which concepts need another look.
- Question
- Attempt
- Review
Free account creation; test access varies by assignment or plan.
Explore question practice — opens in a new tabtrb.kalviyogi.comCS 3D Labs
Make an abstract idea tangible.
Explore computer-science ideas through interactive labs and visual demonstrations. Choose a concept and see how its parts work together.
- Explore
- Interact
- Understand
Check the current lab catalogue and enrolment requirements.
Explore interactive labs — opens in a new tabcs.kalviyogi.com369 Video
Stay with the full explanation.
Make time for a fuller explanation. Watch course videos assigned to your account, adjust playback speed and resume your learning.
- Watch
- Pause & think
- Continue
Sign-in and assigned-course access are required.
Open the video workspace — opens in a new tabvideo.369tesla.org.inCS PracticalVerse
Change something. See why it matters.
Change an input and follow what happens. Explore algorithms and computer-science processes with visual simulations and step-by-step explanations.
- Change an input
- Observe
- Connect
Check each simulator and the platform's current access options.
Try a visual simulation — opens in a new tabsim.kalviyogi.comSmart Notes OS
Bring the idea, code and output together.
Read the idea, follow the code and understand the output. Connect Tamil explanations, dry runs and exam points in structured computer-science notes.
- Concept
- Code & dry run
- Exam points
Free topic previews and Premium options are shown on the site.
Explore structured notes — opens in a new tabcsnotes.kalviyogi.comKalviYogi Book OS
A little space for deeper reading.
Make room for focused reading. Explore digital books and study notes, with account tools for bookmarks, reading progress and personal page notes.
- Read
- Bookmark
- Return
Free and Premium collections; access is shown for each book.
Browse the digital library — opens in a new tabbookos.kalviyogi.comPlatforms open in their own tabs. Check each site for current topics, account requirements and access options.
Learn the idea. Then own the subject.
Strong preparation starts with a clear explanation. Move from understanding a concept to using it with confidence.
Understand
Explanations that make the idea clear, in Tamil and English.
Connect
Diagrams and structured notes to see how concepts fit together.
Practise & revisit
Build recall through practice, revision and purposeful learning.
Preparation with a clear direction.
Compare published courses, their teaching medium and delivery mode. Ask the academy about the batch that suits you.
TRB Computer Instructor — current batch
A TRB CSI batch is currently running. The academy reports 118 students enrolled in TRB CSI during 2026.
Ask about class detailsOne preparation plan. Two ways to attend.
Online + offline classes- Printed study books included
- Individual logins for 6 platforms
Computer Instructor Preparation
Plan your Computer Instructor preparation with subject choices, a clear study route and a course-specific enquiry.
PG Assistant / PG TRB Preparation
Plan your PG Assistant / PG TRB preparation with subject choices, a clear study route and a course-specific enquiry.
Graduate Teacher / BRTE Preparation
Plan your Graduate Teacher / BRTE preparation with subject choices, a clear study route and a course-specific enquiry.
Secondary Grade Teacher Preparation
Plan your Secondary Grade Teacher preparation with subject choices, a clear study route and a course-specific enquiry.
Try the teaching. Explore the material.
A closer look at how we explain, organise and connect ideas. Published samples are freely accessible, without a student account.
Programming Logic in 4 Languages
Trial PDF: compare programming ideas in JavaScript, C++, Python and PHP. Read the first 54 source pages in English.
Python Programming - Unit VII
Read the first 54 pages with the original cover, introduction and opening lessons. English PDF sample.
Data Structures and Algorithms - Unit IV
Read the first 54 pages with the original cover, introduction and opening lessons. English PDF sample.
Room to learn. Space to focus.
Classrooms, digital teaching tools and office support come together in our 2,450 sq ft learning centre in Bodinayakanur.
BODINAYAKANUR · THENIAC classrooms
Air-conditioned rooms for in-person learning.
2 modern smart boards
Digital displays to support classroom explanations.
UPS power backup
Backup power for the learning centre.
2 bathrooms
Bathroom facilities within the centre.
Office & support spaces
Dedicated office areas alongside the classrooms.
Learn on screen. Find focus in the classroom. Choose the way that works for you.
Progress, with the evidence to support it.
StellaJames
Polytechnic Computer Science · State-rank achievement.
Academy-confirmedView achievementKaveri
TRB Computer Instructor · State-rank achievement.
Academy-confirmedView achievementPetShiya
TRB Computer Instructor · State-rank achievement.
Academy-confirmedView achievementa place.Open to
possibility.
BODINAYAKANUR · THENI
A learning space. A teaching purpose.
369 Tesla Academy brings the KalviYogi education identity to TRB preparation. Based in Bodinayakanur, Theni District, our focus is clarity in learning and a considered approach to preparation.
Get to know the academyStay informed. Stay focused.
Official examination information and academy announcements are labelled separately. Always read the original notification for recruitment details.
Go straight to the official source.
For the latest recruitment notifications, eligibility, application dates and results, visit the Tamil Nadu Teachers Recruitment Board.
A little clarity before you begin.
Is this the official Teachers Recruitment Board website?
No. 369 Tesla Academy is an independent preparation academy. Refer to the Tamil Nadu Teachers Recruitment Board for official notifications, eligibility and application dates.
Do I need an account to explore free samples?
No. Published sample books and free classes are accessible without a student account or phone-number submission.
Does submitting an enquiry reserve a seat?
No. An enquiry helps you ask the academy about preparation. The academy will confirm course availability, fees and admission details.
Let’s talk about your next chapter.
Share the examination and subject you have in mind. The academy can help you understand available preparation, study material and batch details.
369 Tesla