Software Development from Zero
by Sergey Okinchuk
Ch. 1

Software Development from Zero

Welcome

A plain-language tour of how modern software is actually built — not a programming language, but the whole craft around it. No background needed beyond using a computer. By the end you'll understand the full life of a piece of software, how real teams work, and every common word and practice along the way — from requirements and design to testing, shipping, and keeping software running.

14 chapters 62 topics covered 5 hours audio Knowledge check on every topic

About This Course

Most people picture software development as one thing: a person typing code. Writing code matters, but it's a small slice of how real software gets made. Around it sits a whole craft — figuring out what to build, designing it, working as a team, testing it, shipping it, and keeping it running for years. This course is about that craft.

It is a tour of the discipline, not a coding class. You won't be taught a programming language here, and you won't type any commands. Instead you'll learn how software is built from idea to running product, the way professionals actually do it — and you'll come away understanding every common word and practice on a software team.

To make it concrete, one example runs through the whole book: a small team building a habit-tracking app called Cadence. You'll watch the same four people make every decision this course describes, so the ideas stack up into one clear picture instead of resetting each chapter.

Who This Is For

Anyone heading toward a career building software who wants the big picture before — or alongside — learning to code. Career-switchers. Students. Self-taught coders who can write a little but have never seen the process around the code. If words like "Agile", "code review", "CI/CD", "technical debt", or "the backlog" are fuzzy to you, this is where they become clear.

What You Need to Know First

  • How to use a computer and a web browser as an everyday user — that's the only assumption
  • No prior knowledge of programming, version control, servers, or process — every term is explained from scratch
  • No coding, no command line, no setup required — nothing is operated here, only understood
  • A willingness to meet new words; each one is defined the first time it appears

How the Course Is Built

The fourteen chapters follow the life of software from start to finish. The first few explain what software development is and how teams organize. The middle chapters walk the journey of building — deciding what to make, designing it, writing it well, working together, and testing it. The later chapters cover shipping software, running it in production, keeping it secure, and the human side of teams — closing with the bigger picture of how good teams are measured and where the field is going.

Every topic has the same gentle shape: an everyday hook to start, the idea explained step by step, one real-world comparison to make it stick, a look at how it plays out on the Cadence team, the mix-ups beginners usually run into, and why it matters. A short knowledge check ends each one. It's patient, but it keeps moving.

No background assumed
You only need to know how to use a computer. Every term — a server, an API, a pull request, a deployment — is explained from zero, the first time it appears. Nothing is taken for granted.
The discipline, not a language
This course teaches how software is built, not how to write a specific language. Coding, version control, and the cloud appear as ideas, with pointers to the hands-on courses that go deep on each.
One example, all the way through
The Cadence team builds one app across the whole book. Each practice is shown happening to real people on a real project, so the concepts connect instead of floating free.
Broad, honest, and current
The goal is a wide, accurate map of the craft, not deep weeds. Where something is simplified, we say so — you'll never have to unlearn what you were told here.

Chapter Map

Chapter 1
What Software Development Really Is
The difference between code, software, and a product; the kinds of software in the world; what "engineering" adds to coding; and the team of people around every piece of software.
Chapter 2
The Software Development Life Cycle
The repeatable journey every piece of software takes from idea to retirement, its eight phases, why fixing mistakes late costs so much, and the team you'll follow all book.
Chapter 3
How Teams Work: Methodologies
The ways teams organize the work — Waterfall, Agile, Scrum, Kanban — plus sprints, backlogs, standups, estimation, and what "done" really means.
Chapter 4
Knowing What to Build: Requirements & Product
Where requirements come from, the difference between what software does and how well it does it, user stories, and the art of building the smallest useful thing first.
Chapter 5
Designing the Solution: Architecture & Design
How software is shaped before it's written — modules, coupling and cohesion, architectural styles from monoliths to microservices, APIs and data, and design patterns.
Chapter 6
Writing the Code: Languages, Paradigms & Tools
A map of the programming landscape — language families and paradigms, compiled versus interpreted, the developer's environment, and the dependencies every project leans on.
Chapter 7
Code That Lasts: Quality & Craftsmanship
What makes code good — clean code, the everyday principles, SOLID, refactoring, technical debt, and the automated tools that catch problems before a human does.
Chapter 8
Working Together: Version Control & Collaboration
The team's time machine — how version control lets many people share one codebase, plus pull requests, code review, and the strategies teams use to merge safely.
Chapter 9
Does It Work? Testing & QA
Why we test, the test pyramid, writing tests first, the real work of quality assurance, and how a bug travels from report to fix.
Chapter 10
Shipping It: Build, Integrate & Release
Turning code into something users can reach — builds and artifacts, continuous integration, environments, release strategies, versioning, and the twelve-factor app.
Chapter 11
Keeping It Alive: Running Software in Production
The half of the job nobody pictures — deploying, watching software with logs and metrics, setting reliability targets, and responding when things break.
Chapter 12
Building It Safe: Security & Privacy by Design
Security as a thread through every phase — the common threats, identity and secrets, the software supply chain, and protecting the data you're trusted with.
Chapter 13
The Human Side: Documentation, Communication & Teamwork
The skills behind the code — documentation that earns its keep, recording decisions, communicating clearly, and spreading knowledge so no one is irreplaceable.
Chapter 14
The Bigger Picture: Process, Practice & Career
How good teams are measured, what a healthy engineering culture feels like, open source and AI-assisted development, ethics, and one Cadence feature from idea to production.

Disclaimer

This course is an independent educational project created and maintained by Sergey Okinchuk. It is provided for learning and reference purposes only.

No affiliation. This course is not affiliated with, sponsored by, endorsed by, or officially connected to any company, product, tool, or project mentioned. All opinions, interpretations, and recommendations expressed are those of the author.

Trademarks. Product, tool, and company names used in this course are trademarks of their respective owners. Their use is for identification and educational purposes only and does not imply any endorsement.

Accuracy and currency. Software practices and tools evolve continuously — names, conventions, and recommendations drift over time. This course teaches durable concepts rather than step-by-step instructions; always consult current, authoritative sources before making professional decisions.

No warranty. This material is provided "as is" without warranty of any kind. Explanations are simplified for learning and are not a substitute for professional advice. The author accepts no liability for any loss or damage arising from reliance on the content.