Textbook for developers
System Design: From Zero to Hero
Scalable, reliable systems explained in simple language, with facts, humour, activities, 25+ real case studies and a question bank with answers.
Complete: 796 pages · Short: 283 pages
7 books · free previews
The Job-Ready Series: interview books for developers
System Design, DSA in Java and Python, DBMS, Computer Networks, Operating Systems and Full-Stack TypeScript with Next.js, written by Shreyash Tripathi in simple language, with worked examples and interview questions with answers.
Why I wrote these books
Before placements, my problem wasn't a lack of material. It was too much of it. A playlist for DBMS, a PDF for OS, three websites for DSA, and a new "must-watch" video every day. I kept switching sources, kept getting distracted, and never knew if I had covered what interviews actually ask.
What finally worked was putting everything in one place: one clear path per subject, in simple language, with the questions interviewers really ask, plus YouTube for the topics I wanted to see explained visually.
That's the Job-Ready Series. Each book covers one subject end to end, with the concepts, worked examples and interview questions with answers, focused on the skills companies hire developers for in 2026 and the years ahead.
I wrote them for students and early-career developers who want a serious internship or job and are tired of jumping between ten sources. Start with the free preview. If it helps, ask me for the full book.
— Shreyash Tripathi
The books
Job-Ready Series, Java edition
DSA in Java: From Zero to Offer
Start from Java basics, learn 20 patterns, and crack coding rounds. Every problem in simple steps: brute force, the key trick, a dry run, clean code and Big-O.
Java edition: 405 pages
Job-Ready Series, Python edition
DSA in Python: From Zero to Offer
Start from Python basics, learn 20 patterns, and crack coding rounds. Every problem in simple steps: brute force, the key trick, a dry run, clean code and Big-O.
Python edition: 406 pages
Job-Ready Series
Database Management Systems
Everything about databases that interviews ask and real jobs use: ER models to normalization, SQL to window functions, transactions to B+ trees. Simple language, worked examples, humour and 120+ interview questions with answers.
Complete: 422 pages · Short: 186 pages
Job-Ready Series
Computer Networks
Everything about networks that interviews ask and real jobs use: OSI to TCP, subnetting to TLS, ping to Wireshark. Simple language, worked numericals, humour and 100+ interview questions with answers.
Complete: 364 pages · Short: 164 pages
Job-Ready Series
Operating Systems
Operating systems for job hunting: processes, threads, scheduling, synchronization, deadlocks, memory, virtual memory, file systems, containers and Linux, with worked numericals and 90+ interview questions with answers.
Short: 192 pages
Job-Ready Series, Compact edition
Full-Stack TypeScript and Next.js
Frontend and backend in one compact book, from basics to advanced: how the web works, HTML, CSS, JavaScript, TypeScript, React, Next.js, Node.js APIs, databases, auth, caching, Docker, performance, security, testing and 100 interview questions with answers.
Compact: 362 pages
How it works
1. Read the free preview
Every book has a free PDF with the opening pages and the first chapters.
2. Request the full book
Liked it? Click "request full book" and a ready-made email opens.
3. Get it by email
I reply with the full PDF. It's free on request for now.
Books FAQ
Are the books free?
The previews are free to download right here. The full books are currently free on request: email me from any book page and I'll send the PDF.
Who are the books for?
Students preparing for internships and placements, and early-career developers preparing for interviews or a job switch. Each book starts from the basics, so you don't need prior knowledge of the subject.
What's the difference between the Complete and Short editions?
The Complete edition explains every topic in depth with more examples and practice. The Short edition covers the same chapters in a faster, revision-friendly format.
What format are the books in?
PDF, readable on a laptop, tablet or phone.